I own a 92 vw golf 1.8L 8v (not GTI) and im confused on which gas i should burn. I have been using shell v-power for the past few months and my motor has a rattle type noise when its fully warmed (half way on the temp gauage) and a little tick all the time. I was just wondering if i should change the gas station to esso or something different if it would be better for the engine (it has 265xxx on it). Thanks.