It’s an advanced, next-generation engine oil standard focusing on ultra-low viscosity oils for modern engines. When purchasing oil, look for the API Service Symbol "Donut" on the label, which is an ...
If you've ever bought a quart of motor oil for your vehicle, you've likely encountered the letters API somewhere on the label. In fairness, there are a lot of abbreviations, symbols and odd number ...
FLEET OWNER learned today that on December 4th, the ASTM Heavy Duty Engine Oil Classification Panel met and unanimously voted in the tests and limits needed to establish the new API CI-4 oil-service ...
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