[Coachwhip]

Just out of interest.
Does the 98 octane work on a 4.4 car? Standard tune that is.
I know they will make a difference with more modern engines as they'll have anti knock sensors and the like. But I'm thinking the throttle cable models are much more basic on sensors, so will the car learn it's got better fuel and adjust? If so how long is it likely to take. , would we be talking a fairly quick change after filling with 98. Or would it take a few tankfulls before any difference is noticed?

Thanks