Adam and anyone else, You are wrong on the octane subject. Remember that the car was made in Europe and the specs for the engine are based on European standards. The are two different methods for the octane rating. That 91 refers to the "research method" which is used in Europe and it equals to about 86 using the "R+M/2 method" used in US. If you go to ANY gas station in US there is a yellow sticker on the pump that has the octane rating and method for that rating. In US it is R+M/2 method. So, for all you guys in US - the DeLorean engine is rated for 86 octane gas and it really doesn't do much good to use the more expensive premium (well, maybe for the owner of the gas station it does). It's just more expensive. On the other hand, if your car seems to run bad on the 87 octane gas it means that it might need a tune-up because there is something wrong going on. I always use 87 gas in my D and it always starts at the touch of the key and runs beautifully. Take care everyone! Tom Niemczewski tomciodmc@xxxx - tomciodmc'AT'poczta.onet.pl VIN 6298 (FOR SALE) ----- Original Message ----- From: "Adam Price" <acprice1@xxxx> <SNIP> > I put premium gas in it for the > first time since I;ve owned it. I know these engines are rated for 91 > octane, but premium is 92. Could this adversely affect the engine > performance? > > Adam -- Tego nie znajdziesz w zadnym sklepie! [ http://oferty.onet.pl ]