What octane fuel to use in a 95 Buick Roadmaster?
The 1995 Buick Roadmaster's owner's manual will specify the recommended octane rating. However, almost all 1995 Buick Roadmasters (both the V6 and V8 versions) recommend using regular unleaded gasoline (87 octane). Using a higher octane fuel won't hurt the engine, but it's unnecessary and a waste of money. Check your owner's manual to be absolutely certain, though.