02-16-2012, 07:23 PM
I am trying to stop a rear main seal leak in a 1997 subaru outback 2.5. I am on my 3rd attempt at getting this right. First attempt was a failure with the seal flush with the block as per manual. Second attempt i decided to go a bit deeper having thought slight groove wear would keeping it from sealing. Well this did not work. I seated these seals as close to perfect as i could and did not mar any surface or see any grooves or burrs on the sealing surfaces. I noticed one thing which is driving me crazy. The after market seals show actually 2 different seal sizes differing by less than one thousandth. But this difference is only realized on the dimension that contacts the shaft. Cant seem to locate oem sizes so that is not a help. Seems to be alot of manufacturers out there. I tried the Felpro, but am wondering if I should try dealership oem, which has changed numerous times, or go for the speedi sleeve to rule out any chances of more headaches. If anyone has a guaranteed no headache manufacturer of seals, please let me know. And it's not the separator plate, this was replaced.