14-06-2014, 04:07 AM
I seen a MASSIVE change in MPG's in my Vectra 3.2 V6 I had running it on the worst mistake of my life (Tesco's cheap crap) I got 7MPG driving it like a grandad, on Shell V-Power it got a TAD more power, BP Ultimate it got 10MPG and a bit more power that it did with Shell V-Power so ran it on that, then tried to use the Texaco stuff and well yeah needless to say the car run and then cut out again once the Shell had been run through, didn't start with the Texaco stuff in for some reason, it's all dependent on your car and the mods, it's just a case of trying it and seeing if it agrees with it, only way I found out before I detonated my engine for been a prick!