i tried the tesco stuff 99ron and felt my car wasnt running as good as optimax does.. so i got to the nearest shell station and put some optimax in.. OPTIMAX THE DRINK OF CHAMPIONS!!!!!!!!!!

but also if your car has been mapped on a certain petrol then your car will run better on that petrol then another brand. so if it was mapped on bp ultimate stick to that. or if it was optimax stick to that. because i was at the rollers and saw some have a massive difference based on his petrol he used the 1st time and the petrol used the second time..