BP is fine, it's what I run the 911 on and what I used to run the Zed on
The additives make a hell of a difference. Due to a balls-up by one unnamed tuning company my old mk3 turbocharged MR2 was mapped for 100+ RON rather than the 97 I wanted. As such, I had to fill up every single time with a tank of the good stuff plus a bottle of the additive, and if I didn't do so it would pre-detonate all over the place. Scary stuff, but at least it gave me full confidence in the product. Millers is by the far the best bang for buck, £4.99 gets you one shot for a whole tank. Well worth keeping a bottle in the boot just in case.
Thanks for the info pal. Good to know I'm not wasting sponds on it.
Does that Redex stuff work?. I noticed Asda has it at 2 quid for a bottle and halfrauds is selling the same size for 8. It says it has detergents to clean injectors etc, but I was under the impression that BP Ultimate had the same in it, or are the claims of improved mileage and performance negligible in both cases!!