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Introduced in March 2025, this category is designed to provide protection against both fresh- and aged-oil low-speed pre-ignition (LSPI), improved timing chain wear protection, and enhanced high-temperature deposit protection for pistons and turbochargers, along with improved sludge and varnish control.
API SQ with Resource Conserving aligns with ILSAC GF-7A by combining API SQ performance with improved fuel economy, enhanced emission control system protection, improved low-temperature pumpability, and protection for engines operating on ethanol-containing fuels up to E85.
For 2025 and older automotive engines.
For 2025 and older automotive engines.
For 2025 and older automotive engines.
For 2025 and older automotive engines.
For 2025 and older automotive engines.
Not suitable for use in most gasoline-powered automotive engines built after 1996. May not provide adequate protection against build-up of engine sludge, oxidation, or wear.
Not suitable for use in most gasoline-powered automotive engines built after 1993. May not provide adequate protection against build-up of engine sludge, oxidation, or wear.
Not suitable for use in most gasoline-powered automotive engines built after 1988. May not provide adequate protection against build-up of engine sludge.
Not suitable for use in most gasoline-powered automotive engines built after 1979.
Not suitable for use in most gasoline-powered automotive engines built after 1971. Use in more modern engines may cause unsatisfactory performance or equipment harm.
Not suitable for use in most gasoline-powered automotive engines built after 1967. Use in more modern engines may cause unsatisfactory performance or equipment harm.
Not suitable for use in most gasoline-powered automotive engines built after 1951. Use in more modern engines may cause unsatisfactory performance or equipment harm.
Contains no additives. Not suitable for use in most gasoline-powered automotive engines built after 1930. Use in modern engines may cause unsatisfactory performance or equipment harm.
API Service Category CK-4 describes oils for use in high-speed four-stroke cycle diesel engines designed to meet 2017 model year on-highway and Tier 4 non-road exhaust emission standards, as well as for previous model year diesel engines. These oils are formulated for use in all applications with diesel fuels ranging in sulfur content up to 500 ppm (0.05% by weight). However, the use of these oils with greater than 15 ppm (0.0015% by weight) sulfur fuel may impact exhaust aftertreatment system durability and/or oil drain interval.
These oils are especially effective at sustaining emission control system durability where particulate filters and other advanced aftertreatment systems are used. API CK-4 oils are designed to provide enhanced protection against oil oxidation, viscosity loss due to shear, and oil aeration, as well as protection against catalyst poisoning, particulate filter blocking, engine wear, piston deposits, degradation of low- and high-temperature properties, and soot-related viscosity increase.
API CK-4 oils exceed the performance criteria of API CJ-4, CI-4 with CI-4 PLUS, CI-4, and CH-4, and can effectively lubricate engines calling for those API Service Categories. When using CK-4 oil with higher than 15 ppm sulfur fuel, consult the engine manufacturer for service interval recommendations.
Introduced in 2010, API Service Category CJ-4 oils are designed for high-speed four-stroke cycle diesel engines that meet 2010 model year on-highway and Tier 4 non-road exhaust emission standards, as well as for previous model year diesel engines. These oils are formulated for use in all applications with diesel fuels ranging in sulfur content up to 500 ppm (0.05% by weight). However, the use of these oils with greater than 15 ppm (0.0015% by weight) sulfur fuel may impact exhaust aftertreatment system durability and/or drain interval.
API CJ-4 oils exceed the performance criteria of API CI-4 with CI-4 PLUS, CI-4, CH-4, CG-4, and CF-4, and can effectively lubricate engines calling for those API Service Categories. When using CJ-4 oil with higher than 15 ppm sulfur fuel, consult the engine manufacturer for service interval recommendations.
Introduced in 2002, API Service Category CI-4 oils are designed for high-speed, four-stroke engines intended to meet 2004 exhaust emission standards, which were implemented starting in 2002. CI-4 oils are formulated to sustain engine durability in engines equipped with Exhaust Gas Recirculation (EGR) and are intended for use with diesel fuels containing up to 0.5% sulfur by weight.
These oils can be used in place of CD, CE, CF-4, CG-4, and CH-4 oils. Some CI-4 oils may also qualify for the CI-4 PLUS designation.
Introduced in 1998, API Service Category CH-4 oils are designed for high-speed, four-stroke engines intended to meet 1998 exhaust emission standards. CH-4 oils are specifically formulated for use with diesel fuels containing up to 0.5% sulfur by weight.
These oils can be used in place of CD, CE, CF-4, and CG-4 oils.
Not suitable for use in most diesel-powered automotive engines built after 2009.
Not suitable for use in most diesel-powered automotive engines built after 2009.
Not suitable for use in most diesel-powered automotive engines built after 2009. Two-stroke cycle engines have different lubrication requirements than four-stroke engines, so consult the manufacturer for current lubrication recommendations.
Not suitable for use in most diesel-powered automotive engines built after 2009. Later “C” category oils are generally suitable or preferred for diesel engines that previously required “CF” oils. However, older equipment and two-stroke diesel engines—particularly those specifying monograde oils—may still require “CF” category oil.
Not suitable for use in most diesel-powered automotive engines built after 1994.
Not suitable for use in most diesel-powered automotive engines built after 1994.
Not suitable for use in most diesel-powered automotive engines built after 1994.
Not suitable for use in most diesel-powered engines built after 1990.
Not suitable for use in most diesel-powered engines built after 1961.
Not suitable for use in most diesel-powered engines built after 1959.
| SAE 粘度等级 | 低温 °C 曲柄粘度(1)，最大 (CCS) | 低温 °C 泵送粘度(2)，cP 最大值，无屈服应力 | 100°C 时的运动粘度 (3)(cSt) 最小值 | 100°C 时的运动粘度 (3)(cSt) 最大值 | 150°C 和 106 s-1Min 时的高剪切粘度 (4)，(cP) |
|---|---|---|---|---|---|
| OW | 6200 @ -35 | 60000 @ -40 | 3.8 | - | - |
| 5W | 6600 @ -30 | 60000 @ -35 | 3.8 | - | - |
| 10W | 7000 @ -25 | 60000 @ -30 | 4.1 | - | - |
| 15W | 7000 @ -20 | 60000 @ -25 | 5.6 | - | - |
| 20W | 9500 @ -15 | 60000 @ -20 | 5.6 | - | - |
| 25W | 13000 @ -10 | 60000 @ -15 | 9.3 | - | - |
| 20W | - | - | 5.6 | <9.3 | 2.6 |
| 30W | - | - | 9.3 | <12.5 | 2.9 |
| 40W | - | - | 12.5 | <16.3 | 2.9（0W - 10W） |
| 40W | - | - | 12.5 | <16.3 | 3.7（15 瓦 - 25 瓦） |
| 50W | - | - | 16.3 | <21.9 | 3.7 |
| 60W | - | - | 21.9 | <26.1 | 3.7 |
| ISO 粘度等级 | 中点运动粘度 | 40° (104°F) 时的运动粘度限值 cSt | ASTM, Saybolt 粘度值 | Saybolt 粘度 SUS 100°F (37.8°C) | ||
|---|---|---|---|---|---|---|
| 最小 | 最大 | 最小 | 最大 | |||
| 2 | 2.2 | 1.98 | 2.42 | 32 | 34.0 | 35.5 |
| 3 | 3.2 | 2.88 | 3.52 | 36 | 36.5 | 38.2 |
| 5 | 4.6 | 4.14 | 5.06 | 40 | 39.9 | 42.7 |
| 7 | 6.8 | 6.12 | 7.48 | 50 | 45.7 | 50.3 |
| 10 | 10 | 9.00 | 11.0 | 60 | 55.5 | 62.8 |
| 15 | 15 | 13.5 | 16.5 | 75 | 72 | 83 |
| 22 | 22 | 19.8 | 24.2 | 105 | 96 | 115 |
| 32 | 32 | 28.8 | 35.2 | 150 | 135 | 164 |
| 46 | 46 | 41.4 | 50.6 | 215 | 191 | 234 |
| 68 | 68 | 61.2 | 74.8 | 315 | 280 | 345 |
| 100 | 100 | 90.0 | 110 | 465 | 410 | 500 |
| 150 | 150 | 135 | 165 | 700 | 615 | 750 |
| 220 | 220 | 198 | 242 | 1000 | 900 | 1110 |
| 320 | 320 | 288 | 352 | 1500 | 1310 | 1600 |
| 460 | 460 | 414 | 506 | 2150 | 1880 | 2300 |
| 680 | 680 | 612 | 748 | 3150 | 2800 | 3400 |
| 1000 | 1000 | 900 | 1100 | 4650 | 4100 | 5000 |
| 1500 | 1500 | 1350 | 1650 | 7000 | 6100 | 7500 |
| 防锈抗氧化齿轮油 | 粘度范围 | 等效 ISO 等级 | 极压抑制齿轮油 ISO 等级齿轮润滑油 |
|---|---|---|---|
| AGMA 润滑油编号 | 40°C 时的 cSt (mm²/s) | AGMA 润滑剂编号 | |
| 1 | 41.4 至 50.6 | 46 | |
| 2 | 61.2 至 74.8 | 68 | 2 EP |
| 3 | 90 至 110 | 100 | 3 EP |
| 4 | 135 至 165 | 150 | 4 EP |
| 5 | 198 至 242 | 220 | 5 EP |
| 6 | 288 至 352 | 320 | 6 EP |
| 7 | 414 至 506 | 460 | 7 EP |
| 8 | 612 至 748 | 680 | 8 EP |
| 8A | 900 至 1100 | 1000 | 8A EP |
| SAE J306 汽车齿轮粘度分类 | 车桥和手动变速器润滑油粘度分类 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 70W | 75W | 80W | 85W | 80 | 85 | 90 | 140 | 250 | ||||
| 100° 时的粘度 | 最大，毫米²/秒 | 4.1 | 4.1 | 7.0 | 11.0 | 7.0 | 11.0 | 13.5 | 24.0 | 41.0 | ||
| 最大，毫米²/秒 | 无要求 | 11.0 | 13.5 | 24.0 | 41.0 | 无要求 | ||||||
| 粘度为 150,000 mPa.s，最高温度 °C | -55 | 0-40 | 0-26 | 0-12 | 无要求 | |||||||
| 20 小时。KRL 剪切（CRC L 45-T-93），剪切后 KV100，mm²/s | 4.1 | 4.1 | 7.0 | 11.0 | 7.0 | 11.0 | 13.5 | 24.0 | 41.0 | |||
| 75W | 80W-90 | 85W-140W | ||||
| 100° 时的粘度 | 最大，毫米²/秒 | 41 | 13.5 | 24.0 | ||
|---|---|---|---|---|---|---|
| 最大，毫米²/秒 | - | 24.0 | 41.0 | |||
| 粘度为 150,000 mPa.s，最高温度 °C | -40.0 | -26.0 | -12.0 | |||
| 通道点，分钟，°C | -45.0 | -35.0 | -20.0 | |||
| 闪点，分钟，°C | 150 | 165 | 180 | |||
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