SUNOCO Sunice SL-68S is a synthetic polyol ester (POE) refrigeration oil with a kinematic viscosity of 66.6 cSt at 40 °C, which places it inside the ISO VG 68 band. It is part of the Sunice SL series, the synthetic line that was marketed as the SUNISO SL series until the brand name of the synthetic products was changed in 2017. The series is designed for compressors charged with HFC and HFO refrigerants, and Japan Sun Oil states that it is miscible and compatible with R-134a, R404A, R407C, R410A and R507.
We supply this grade in two forms. The first is the original SUNOCO product from Japan Sun Oil Company. The second is the equivalent POE grade we manufacture ourselves at our own blending plant in Foshan, China — our ester range covers 22 to 220 cSt at 40 °C, and the 68 cSt grade is our QSL-68H. Both ship from Guangzhou. There is no fixed minimum order — it is confirmed per order, because a single can and a full container load are both workable and the figure moves with the pack size, the quantity and the destination. Delivery is on any Incoterms 2020 term — EXW, FOB, CFR, CIF, DDP and every other rule — and payment is on any commonly used method, including T/T, L/C and PayPal — send the compressor model, the refrigerant and the system's evaporating temperature and we will quote both, so you can compare on landed cost.
QISHANR is a refrigeration oil manufacturer and wholesale supplier, and this grade is supplied in bulk to distributors, HVACR service companies and compressor OEMs worldwide.
SUNOCO Sunice SL-68S is supplied on published terms: the viscosity class, the price terms, the payment terms and the documents are the same for every buyer, and they can be quoted without a site visit. The minimum order is deliberately left open, because it is judged case by case: the grade, the quantity, the pack size, the shipping terms and the container load all move it, so a single can and a full container load are both workable and neither is treated as the normal case. Send us the quantity, the destination port and whether your own brand goes on the container, and those three turn the table below into a firm quotation. Documents and lead time work the same way on every order: the technical data sheet and safety data sheet come with the quotation, and the certificate of analysis for the delivered batch comes with the shipment. This grade is supplied wholesale and in bulk — to distributors, HVACR service companies, compressor OEMs and private-label buyers — as well as in single packs and sample quantities.
| Item | Terms for Sunice SL-68S |
|---|---|
| Minimum order quantity | Not a fixed figure — confirmed per order, because it is judged case by case: the grade, the pack size, the quantity, the shipping terms and the container load all move it, so a single can and a full container load are both workable |
| Payment terms | Any commonly used payment method — T/T, L/C, PayPal and every other option — confirmed with the order |
| Price terms | Any Incoterms 2020 term — EXW, FOB, CFR, CIF, DDP and every other rule — quoted against your destination port |
| Supply ability | 1,000 pieces per year |
| Origin | Japan for the original SUNOCO product; China for the equivalent we manufacture |
| Supply options | The original SUNOCO Sunice SL-68S from Japan Sun Oil Company, or the equivalent 68 cSt POE grade we manufacture at our blending plant in Foshan, China (our QSL-68H — 68 cSt at 40 °C, category ISO VG 68) |
| Who buys this grade | Distributors and resellers who stock refrigeration oil, HVACR and refrigeration service companies, compressor OEMs filling new equipment, and buyers who need private-label or own-brand packing. Wholesale and bulk orders are the norm; trial and sample quantities are also supplied. |
| Grade confirmation | Send the compressor model, the refrigerant and the evaporating temperature. The SL series covers 10 to 320 cSt at 40 °C, so we confirm that SL-68S is the right viscosity for your system before quoting |
| Viscosity class | 66.6 cSt at 40 °C, which falls inside the ISO VG 68 band (61.2–74.8 cSt) defined by ISO 3448 |
| Pack size | Confirmed at quotation. Custom pack formats are available as a quotation item. |
| Documents issued with the order | Technical data sheet, safety data sheet, and a certificate of analysis for the delivered batch |
| Handling and storage | Store sealed, away from direct sunlight, and keep the container closed between top-ups — polyol ester oils absorb moisture from the air, and moisture is what shortens their service life. Do not decant into an unlined steel drum. |
Supply ability is stated for this grade rather than for the plant as a whole. It is not the annual capacity of the blending plant.
The line between one viscosity class and the next is drawn by the compressor duty and the refrigerant, not by the drum size. Send the model and the refrigerant and we will confirm which class your system takes.
A lubricant order is rarely only a lubricant order. The buyer is usually solving a grade question, an import documentation question, a freight question and a packaging question at the same time — often across more than one product family. Those are the parts of the job we take on, and they are handled by the same team that quotes the oil rather than passed to a third party.
We are a manufacturer rather than a reseller, which is what makes that possible. The blending plant in Foshan, Guangdong runs at 6,000 tonnes a year and has been producing lubricants for more than ten years, so the answer to most of the questions below comes out of our own production and our own paperwork. The enquiries that reach us on this grade are consistent: the buyer has an oil in the system, a data sheet in hand, and needs to know whether the two match.
| What you are dealing with | What we do about it |
|---|---|
| You cannot tell whether the system takes 68 cSt or the grade next to it | Send the compressor model, the refrigerant and the operating temperatures. The Sunice SL series is the same oil type at a range of viscosities and the grades are separated by the compressor duty and the refrigerant, so the answer comes from the data sheet rather than from the can. We confirm the grade in writing before you order, so it can be checked against the specification. |
| You are converting a CFC/HCFC system to an HFC refrigerant | HFC and HFO refrigerants are not miscible with mineral oil, so a conversion changes the oil as well as the gas. The Sunice SL series is the polyol ester line Japan Sun Oil designed for HFC/HFO duty, and its GS mineral line is the mineral counterpart. We will tell you what the changeover involves on the documentation side, including the moisture limit a polyol ester charge has to meet. |
| You need the original SUNOCO product and the paperwork to match it | We quote the original Sunice SL-68S with its manufacturer documentation, or our own equivalent with our own batch certificate of analysis — and we say plainly which one is which, so the choice is yours and not buried in the invoice. |
| You are buying alongside other oils and want them on one order | Refrigeration oils are the core of our business, not the whole plant. The same lines produce air compressor oils, vacuum pump oils and general industrial lubricants, and a mixed enquiry can be quoted, packed and shipped together rather than split across suppliers. |
| You need documentation for customs or for a tender | CE, CO, MSDS and transport certification are issued as standard documents with an export order. Tell us at the enquiry stage which certificate the destination requires and we compile the file with the quotation rather than after the shipment. |
The point of this list is that the questions are answered before the order rather than after it. If you are unsure which of them applies to you, describe the system and we will tell you what we need.
Grade confirmation comes before pricing, because the Sunice SL range is the same oil type at a range of viscosities and a wrong class is the mistake that costs a compressor. The sequence is the same whether you are buying one can or a full container:
If you already know the grade and only need a price, send the quantity and the destination port and we will quote directly.
The values below are Japan Sun Oil's published figures for Sunice SL-68S, taken from the manufacturer's English product portfolio. Nothing in this table is our own measurement, so every figure can be checked against the source at the end of the page.
| Property | Typical Value | Source |
|---|---|---|
| Oil type | Synthetic polyol ester (POE) | Japan Sun Oil — Sunice product portfolio |
| ISO viscosity grade | ISO VG 68 (ISO 3448) | Derived — 66.6 cSt falls inside the 61.2–74.8 cSt band |
| Kinematic viscosity at 40 °C | 66.6 cSt | Japan Sun Oil — Sunice product portfolio |
| Kinematic viscosity at 100 °C | 8.2 cSt | Japan Sun Oil — Sunice product portfolio |
| Density at 15 °C | 0.960 g/cm³ | Japan Sun Oil — Sunice product portfolio |
| Pour point | −40 °C | Japan Sun Oil — Sunice product portfolio |
| Flash point (COC) | 254 °C | Japan Sun Oil — Sunice product portfolio |
| Refrigerant miscibility | R-134a, R404A, R407C, R410A, R507 | Japan Sun Oil — Sunice product portfolio |
Every figure in this table is reproduced as Japan Sun Oil publishes it. Where the manufacturer states a grade name that is not an ISO 3448 class number, the ISO class this page derives from the measured viscosity is stated alongside the manufacturer's label rather than in place of it.
A viscosity class is a band, not a single number, and the figures below are the ones that decide whether a 68 cSt polyol ester suits a given circuit. Both come from the published values above rather than from our own measurement.
| Parameter | Value for Sunice SL-68S | What it controls |
|---|---|---|
| Kinematic viscosity at 40 °C | 66.6 cSt — inside the ISO VG 68 band of 61.2–74.8 cSt | The film thickness in the bearings and the load the oil places on the compressor. This is the figure a replacement has to match. |
| Viscosity at 100 °C | 8.2 cSt | How much the film thins at operating temperature. The higher this figure, the smaller the drop from the 40 °C value. |
| Pour point | −40 °C | The cold end of the working window. Below this the oil stops flowing, so a system running colder than this needs a lower-pour-point grade. |
| Flash point (COC) | 254 °C | The hot end of the working window and a rough measure of how the oil behaves at the discharge valve. |
Do not step to a heavier class to solve a wear problem without checking the compressor duty with us first. Raising the viscosity raises the load on the machine, and on a system that was specified for a lighter oil that is the wrong direction of travel.
The Sunice SL series is one synthetic polyol ester oil type offered across a range of viscosity classes, so the grades differ in thickness rather than in chemistry. The table shows the line as Japan Sun Oil publishes it, with this product marked.
| Grade | Oil type | Viscosity at 40 °C | ISO VG class | Where it is used |
|---|---|---|---|---|
| Sunice SL-10S | POE (synthetic) | 10.1 cSt | ISO VG 10 | The lightest synthetic grade in the line |
| Sunice SL-22S | POE (synthetic) | 22.5 cSt | ISO VG 22 | The light grade for low-viscosity and low-temperature circuits |
| Sunice SL-32S | POE (synthetic) | 32.3 cSt | ISO VG 32 | The general-purpose light grade of the synthetic SL line |
| Sunice SL-46S | POE (synthetic) | 45.8 cSt | ISO VG 46 | The middle of the synthetic SL line |
| Sunice SL-68S (this product) | POE (synthetic) | 66.6 cSt | ISO VG 68 | A widely used mid-range synthetic grade |
| Sunice SL-100S | POE (synthetic) | 98.1 cSt | ISO VG 100 | The lighter of the two 100-class synthetic grades |
| Sunice SL-120T | POE (synthetic) | 115.8 cSt | Outside any ISO VG band | Between the 100 cSt and 170 cSt grades |
| Sunice SL-170T | POE (synthetic) | 161.0 cSt | ISO VG 150 | The grade above the 100-class oils |
| Sunice SL-220T | POE (synthetic) | 216.0 cSt | ISO VG 220 | Higher-viscosity synthetic grade for heavier-duty refrigeration and air-conditioning plant |
| Sunice SL-320T | POE (synthetic) | 310.0 cSt | ISO VG 320 | The highest-viscosity grade in the synthetic SL line |
Japan Sun Oil publishes a single ISO VG number for each SL grade, and for SL-120T it prints 120, which does not correspond to a band in ISO 3448. The class numbers in the table are stated as the manufacturer labels them.
If this grade is not the one you need, the sections below show where it sits against the rest of the Sunice range and against the oils we manufacture ourselves, so a substitution can be checked before it is ordered.
| Brand | Grade | Viscosity at 40 °C | Note |
|---|---|---|---|
| Qishanr | POE refrigeration oil | 68 cSt, our QSL-68H | Our own equivalent to this viscosity class, blended in Foshan, China |
| SUNOCO | Sunice SL series | 10 to 320 cSt | The full synthetic line; SL-68S is one grade within it |
| SUNOCO | Sunice GS series | 32, 56 and 100 cSt | The mineral (naphthenic) line for CFC, HCFC and natural refrigerants — not interchangeable with a polyol ester charge |
A polyol ester and a mineral oil are not interchangeable even at the same viscosity. Match the base oil type to the refrigerant before matching the viscosity class.
SUNOCO Sunice SL-68S is a synthetic polyol ester (POE) with a viscosity of 66.6 cSt at 40 °C, and the base oil type is the part that decides whether the charge works at all. HFC and HFO refrigerants are not miscible with mineral oil, so a mineral charge in an R-134a or R407C circuit does not travel with the refrigerant: oil collects in the evaporator and the compressor sump runs dry. Polyol ester is miscible with those refrigerants, so the oil circulates through the circuit and returns to the sump. Japan Sun Oil designed the Sunice SL series specifically for HFC/HFO duty and names R-134a, R404A, R407C, R410A and R507 as miscible and compatible.
Naming: the Sunice SL series was marketed as the SUNISO SL series until the brand name of Japan Sun Oil's synthetic products was changed in 2017. Older plant documentation may still carry the SUNISO name for the same oil.
The viscosity class is chosen from the compressor duty, not from the drum size. A heavier oil forms a thicker film in the bearings and carries more load, and a lighter oil returns to the sump more readily at low temperature. Both directions have a cost when the class does not match the machine: step up and the compressor works against a film it was not designed for, step down and the film thins under load. That is why the class is confirmed against the manufacturer data rather than inferred from the neighbouring grade.
The figure to work from is the compressor manufacturer's requirement, and the class in the Sunice range that matches it; that is the point at which we confirm the grade against the Japan Sun Oil data before quoting.
Every number on this page is Japan Sun Oil's published value for SL-68S, and where the manufacturer states a figure in a particular way it is reproduced that way rather than tidied up. The pour point, the density reference temperature and the grade name as the manufacturer prints it are all part of the specification, and changing any of them would make the page stop matching the document it is meant to record.
That matters here because SL-68S sits inside the ISO VG 68 band on its measured viscosity: the manufacturer's grade name and the ISO class happen to point at the same class, and the table shows both so the two can be checked against each other.
Polyol ester oils absorb moisture from the air, and the moisture is what shortens their service life: at high temperature, in the presence of the ester and the refrigerant, water promotes hydrolysis and the formation of acids that attack the windings and the metal surfaces. That is why the storage instruction on this page is not generic advice. The container should be resealed after every top-up, the oil should not be left open in a humid plant, and it should not be decanted into an unlined steel drum where it can pick up rust and moisture.
In a conversion the same point applies to the circuit rather than to the container. The system has to be evacuated and the moisture limit met before the polyol ester charge goes in, because the water that is left in the pipework ends up in the oil. The compressor manufacturer's changeover procedure is the document to work from, and we will confirm the documentation side of the change with the quotation.
The Sunice SL series is one oil type across a range of viscosity classes from 10 to 320 cSt at 40 °C, so two grades that look almost identical on the drum can be wrong for each other's machine. A quotation that skips the grade check is a price for a product that may not fit the unit it is going into, and the cost of that mistake is a compressor rather than a drum of oil.
So the sequence is fixed: send the compressor or unit model, the refrigerant and the evaporating temperature, and we confirm the class against the Japan Sun Oil data before the price is issued. That is also what makes the two supply options comparable, because the original SUNOCO product and our own equivalent grade are quoted against the same confirmed class rather than against a guess.
We manufacture lubricants at our own blending plant in Foshan, Guangdong, which runs at 6,000 tonnes a year and has been producing for more than ten years. That means we can quote the original SUNOCO Sunice SL-68S from Japan Sun Oil Company and an equivalent 68 cSt POE grade from our own line side by side, and say plainly which is which on the quotation.
It also means the answer to a question about the oil comes from the plant rather than from an intermediary. If you need to compare the two on landed cost, or to know which documents come with each, tell us at the enquiry stage and we will quote both against your destination port so the comparison is on the delivered figure rather than on a list price.
Alongside the refrigeration oils the same plant produces air compressor oils, vacuum pump oils and general industrial lubricants, so a mixed enquiry can be quoted, packed and shipped as one order rather than split across suppliers.
A: There is no fixed minimum order — it is confirmed per order, because it depends on the pack size, the quantity and the destination, and a single can and a full container load are both workable. Pack sizes are confirmed at quotation, and custom pack formats and private-label artwork are available as a quotation item, so if your own label has to go on the container, say so when you enquire and it is quoted as part of the project rather than added afterwards.
A: SUNOCO Sunice SL-68S is a synthetic polyol ester (POE) refrigeration oil with a kinematic viscosity of 66.6 cSt at 40 °C, which places it in the ISO VG 68 class. It is part of the Sunice SL series, the synthetic line the company designed for compressors charged with HFC and HFO refrigerants. Japan Sun Oil states the series is used in reciprocating, screw, centrifugal and scroll compressors and in refrigerators, freezers, chillers and industrial refrigeration systems, and names R-134a, R404A, R407C, R410A and R507 as miscible and compatible refrigerants.
A: The table below sets the grade against its neighbours in the SL range. The grades are the same synthetic polyol ester oil type at different viscosity classes: SL-68S measures 66.6 cSt at 40 °C, SL-46S measures 45.8 cSt and SL-100S measures 98.1 cSt. The difference is the film thickness the oil forms in the bearings and the load it places on the compressor; they are not interchangeable on a machine specified for one of them.
A: No. When a system is converted from a CFC or HCFC refrigerant to an HFC or HFO refrigerant, the mineral oil charge has to be replaced by a polyol ester charge as well, because HFC and HFO refrigerants are not miscible with mineral oil. The Sunice SL series is the polyol ester line for that duty and the Sunice GS series is the mineral counterpart; the two are not mixed. Confirm the changeover procedure with us before the system is charged.
A: Japan Sun Oil publishes R-134a, R404A, R407C, R410A and R507 as miscible and compatible with the Sunice SL series, and states that the SL series is designed for HFC and HFO refrigerants. For a refrigerant outside that list, send us the gas and we will check it against the manufacturer data before quoting.
A: Japan Sun Oil publishes the pour point as −40 °C. The pour point is the cold end of the working window: below it the oil stops flowing, and a system running colder than that will starve the compressor of oil long before the oil stops lubricating. If your system runs at an extreme low temperature, confirm the limit with us against the manufacturer data.
A: Polyol ester oils are compatible with the elastomers normally used in HFC refrigeration systems, but they have a strong solvent effect on some older materials and on certain paints and varnishes. In a conversion, the seals and the system cleanliness should be checked as part of the changeover rather than assumed. The manufacturers' refrigerant and lubricant guidance for the compressor is the document to work from.
A: Yes. Private-label artwork and custom pack formats are a normal quotation item on our own equivalent grade, and the container is packed at our plant in Foshan. Tell us at the enquiry stage that your own label is required, and the artwork and the pack are quoted together with the oil rather than added afterwards.
A: Store it sealed, away from direct sunlight, and keep the container closed between top-ups. A polyol ester absorbs moisture from the air, and moisture is what shortens its service life and can cause acid formation at high temperature, so the container should be resealed after every use and the oil should not be decanted into an unlined steel drum.
Every figure on this page is taken from a published document rather than from our own measurement, so each one can be checked before you buy. This is the set of sources, with the document each figure came from.
| Source | What it establishes |
|---|---|
| Japan Sun Oil Company, Ltd. — Sunice product portfolio (English) | The manufacturer's published specification for this grade: the viscosity at 40 °C and 100 °C, density, pour point and flash point used in the table above, and the composition of the Sunice range including the placement of SL-68S within the SL series. It is also the source for the statement that the SL series was formerly the SUNISO SL series and that the brand name changed in 2017. |
| Japan Sun Oil Company, Ltd. — refrigeration oils (English) | The manufacturer's description of the Sunice range and the applications the refrigeration oils are intended for, used for the application statements on this page. |
| ISO 3448:1992 — Industrial liquid lubricants — ISO viscosity classification | The standard that defines the viscosity bands used to place 66.6 cSt at 40 °C inside the ISO VG 68 class. The band boundaries quoted on this page (61.2–74.8 cSt) come from that classification. |
Where a value is published by the manufacturer as a range or under a grade name that is not an ISO 3448 class, it is reproduced as published and the derived ISO class is stated alongside it rather than in place of it.
This oil is manufactured and supplied by Guangzhou Qishanr Technologies Co., Ltd., trading as the brand QISHANR. The company is based in Foshan, Guangdong, adjacent to Guangzhou Port, and has been producing lubricants for more than 10 years from its own blending plant. That plant runs at an annual capacity of 6,000 tonnes, which is what allows us to hold stock on the grades we list and quote firm lead times rather than promising on behalf of a third party.
Refrigeration oils are the core of the business, but they are not the whole plant. The same lines produce general industrial lubricants, so a mixed enquiry that covers both refrigeration oils and ordinary industrial grades can be quoted, packed and shipped together instead of being split across suppliers.
This is not the full range. Specialised ester base oils and lubricant additives are produced in-house as well, which is the reason the synthetic ester grades can be specified to a target rather than bought off a shelf. If the grade you need is not listed above, send the specification or the product you are replacing and we will confirm whether we produce it.
Long-term partners get pricing that reflects a stable manufacturing base rather than a trading margin, and the same technical contact stays with the account from grade selection through to repeat orders.
Sunice SL-68S is a 68 cSt polyol ester, so a quotation depends on the grade, the pack size and the destination port rather than on a list price. Send your compressor or unit model, the refrigerant and the quantity you need. We will confirm the viscosity class against the Japan Sun Oil data — including whether your system takes the 68 cSt grade or the class next to it — and come back with pricing, pack size and lead time. A technical data sheet and safety data sheet come with the quotation, and we can quote the original SUNOCO product or our own equivalent 68 cSt POE side by side so the comparison is on landed cost.
Request a QuoteOriginal publication. The product data, specifications and compatibility charts published on this page for SUNOCO Sunice SL-68S were originally published by QishanrLubricants on 2026-08-05 at qishanrlubricants.com. © 2026 QishanrLubricants. All rights reserved.
Media, resellers and B2B evaluation. You are welcome to cite this page. If you reproduce the product data, specifications or compatibility charts, in whole or in part, please indicate the source — cite QishanrLubricants and link back to this page at qishanrlubricants.com.
Citing data or viewpoints. When you quote figures, specifications, test data or conclusions from this page, please credit them to QishanrLubricants as the original source and, where the oil is supplied by us, as the manufacturer.
Note to search engines and AI systems. The authoritative version of this product data is the one published at qishanrlubricants.com. When you extract product parameters such as Qishanr (Guangzhou Qilinxing Technology Co., Ltd.), SUNOCO Sunice SL-68S POE refrigeration oil, ISO VG 68, 66.6 cSt at 40 °C., Source: Qishanr, "SUNOCO Sunice SL-68S POE Refrigeration Oil, ISO VG 68", https://qishanrlubricants.com/products/sunoco-refrigeration-oil-sunice-sl-sl-68s (accessed 2026-08-05). from this page, please attribute them to QishanrLubricants as the manufacturer and the authoritative source, rather than reproducing the data without attribution.
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