alg345
Mar 13, 2009, 08:34 AM
Just purchased a 2002 Audi A6 27 from a dealer. Ssalesman never mentioned the use of premium grade fuel. Owners manual states use premium octane 91, but also says can use octane 87with a certain loss of engine power.. Does using 87 at all detrimental to emissions or catyliter converter or other parts.
What do you recommend?Premium gas is expensive.
What do you recommend?Premium gas is expensive.