Engine Oil Specs.7z | Reliable |

These ratings tell you if the oil meets the latest technological standards for your engine type.

Common in European cars (BMW, VW, Mercedes). Ratings like or C3 indicate specific requirements for high-performance engines or those with advanced exhaust filters. 3. Oil Types: Base Stocks engine oil specs.7z

This represents the oil's resistance to flow at operating temperature (212°F / 100°C). A higher number means a "thicker" oil film, which provides more protection for hard-working or older engines. 2. Performance Categories (The Letters) These ratings tell you if the oil meets