How It Works In solving a rotary oil seal leak with Auto-Rx®, it is important to use conventional motor oil and not full synthetic motor oils. Conventional motor oils have a mineral oil base. This tends to stiffen the seal material a bit, as opposed to synthetics that tend to keep them very pliable.
Rear main seals typically weep or leak from a build up of oil contamination that builds up on the end of the steel crankshaft, right where the polymer rear main seal interacts. So some junk gets caught up at the sealing lip. The shaft is no longer perfectly round as it is spinning.
By allowing Auto-Rx® to clean the crankshaft and seal material, it has a good chance of finding its old polymer memory and perform once again. We cannot stress enough how important it is to run a mineral oil-based motor oil to enable the polymer seal to find its original shape and stiffness.
It is a very labor intensive proposition to change out the rear main oil seal. The transmission has to come out, etc., and this is very expensive. For How to Use go to www.auto-rx.com click on instructions
-- Edited by Frank on Saturday 12th of October 2013 02:02:25 PM
