Cuppa I only started using it again after a year or two not when you put that Repco special up last December, I really have seen no difference BUT I have had the tune up in early January.

I went to Vic for Xmas, bought some down there for the run home and honestly can not notice any change, used it every fill since. Be interesting to see if any change is noticeable as you suggest.

4by4 that looks like 1/2 a litre per hundred better?