Engine Oil Specs.7z -

The current highest standard for gasoline engines (introduced in 2020). It’s designed to protect against "low-speed pre-ignition" (LSPI) in modern turbocharged engines. CK-4 / FA-4: Current standards for diesel engines.

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

Always prioritize what the manufacturer recommends. Using the wrong viscosity can lead to poor fuel economy or engine wear. engine oil specs.7z

A mix of both. It offers better protection than conventional but at a lower price point than full synthetic. 4. OEM Approvals (Manufacturer Specs) engine oil specs.7z

The most common spec is the SAE (Society of Automotive Engineers) grade, like .