Recent content by Car User

Thanks. The car runs OK. I like to think the engine is peppier and has a better purr since starting the treatment. But, that is all subjective and unlike gunk in the oil filter is not easily demonstrable.

The reason for 20w-50 was that the oil light would come on when the car was at idle. Thought it had low oil pressure. Turns out, there was a TSB for this condition. It was a bad wiring-harness (now fixed). Currently, it is running a mix of 20w-50, 10w30, and 5w30. Eventually it will be totally...

Here are some photos (with no scientific testing) of a X2 oil filter after an initial cleaning run of Auto-Rx. The engine is a '99 Dodge 2.7L (known for sludge problems) with around 96K on it. Auto-RX removed an incredible amount of gritty sludge. (I am not sure how gritty and sludge go...