I recently purchased a 1991 Audi 80 diesel and I am wondering what type of oil I should use for optimal performance and longevity. The manual says to use a 10W-30 oil, but I have heard conflicting opinions from other Audi owners. Any advice would be greatly appreciated!
ReplyThe best type of oil for a 1991 Audi 80 diesel engine would be a synthetic 5W-40 oil. This type of oil provides better protection for the engine, especially in colder temperatures, and can improve fuel efficiency.
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