I seem to remember Valvoline makes one one that was developed for Caterpillar that supposedly cleans the ring lands and its quite pricey by US standards.
No idea I never tried it but if the need arises I will if nothing else to compare it to M1 0w40 which I know for a fact works very well at cleaning up old deposits and varnish.
It has to be on something that the pan is real easy to remove, I think I have just the car a 2.0 slow in a Mk IV.
No idea I never tried it but if the need arises I will if nothing else to compare it to M1 0w40 which I know for a fact works very well at cleaning up old deposits and varnish.
It has to be on something that the pan is real easy to remove, I think I have just the car a 2.0 slow in a Mk IV.