The engine runs much quieter although mine was fairly quiet anyway but it just feels all round nicer although I also added the real/ original slick 50, you have to buy the real thing from Australia as Dupont stopped it being marketed in the UK. The UK stuff available now is not bad but really needs adding every oil change whereas the original will protect for 80-100,000 miles. Oh yes! it really is that good! That will really quieten your car engine down. Yes John I do use it in the road car, Plus4 Duratec/MT75 box. Its a nanotec ++ and its what all the performance cars use according to Millers.
