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You should look for this on the oil container, and use
only those oils that display the logo.
R
GM Goodwrench
oil of the recommended viscosity
grades meets all the requirements for your vehicle.
-
This doughnut
shaped logo
(symbol) is used on most oil
containers to help you select
the correct oil. It means that
the oil has been certified
by the American
Petroleum Institute.
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6-23
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