Will using high mileage oil help slow down a plug well seal leak in a 94 Taurus SHO until I have time to change the seals?
I have read that as a HM oil cleans the engine, leaks can develop from cleaning off false seals of built up crud. Supposedly if you keep using it the seal conditioners somewhat restore the seal and the leak goes away. I have been using Maxlife for a couple years in one engine and my seals are weepy, but no drips. Not sure if they were that way before. From this site I understand Maxlife originally had some ester and then changed to PAO.quote:
I've had a high mileage oil, Valvoline Maxlife to be specific, actually cause a front main seal leak. Stopped using it and the leak went away. This was when the Maxlife oils first came out, so they may have changed the formula or something since then.