mc5 Posted January 22, 2021 Share Posted January 22, 2021 My car is due an oil change Autofarm have used castrol edge 5-40 for the last few years. Sure its ok but notice its not a40. Is this an problem or should I switch to mobil one 5-40. Would like to avoid thinner oils due to higher mileage. Link to comment Share on other sites More sharing options...
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