Oil type for 1991 Silverado

Asked by Mattnewguy93 Apr 09, 2020 at 03:39 PM about the Chevrolet Silverado 2500

Question type: Maintenance & Repair

Best oil? She has 269747 Miles under her

3 Answers
2,230

RickMN answered 4 years ago

10W-30 is the recommended oil. High mileage oil would be a plus

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40,180

TDolby answered 4 years ago

The same oil you have been using all these years. Go a step up in weight if you are leaking out the gaskets.

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155,245

james answered 4 years ago

Exactly, my 03 S10 Pick Up has 296,000 miles on it and I still use the recommended 5W30 with no problem. Hope that helps! Jim

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