Wynns 2 x Super Charge Oil Treatment 425ml

You have to warm your Engine up before pouring treatment in.

does seem to improve engine sound - I have always used this product in all my vehicles

Great oil stops all noises and keeps parts oiled when running it does what it says on the tin

Literally does what it says on the tin.

first class use all the time

I have found this additive helps particularly in older cars. There is a definite gain in consumption and I feel the engine is slightly quieter at low revs.

Thanks