Rear Main Seal Still Leaking
- Thread starter gziggy
- Start date
levimcaffee
New Member
I am also trying to tackle the RMS, I have an 05 LJ and it never leaked until I started running Amsoil. Has been leaking for a while and I have been putting it off until I had to replace the harmonic balancer and ended up replacing timing chain and seal and valve cover seal and things have snowballed from there! My question is I have noticed a little defect on the housing where the upper seal goes on the rear main. Am I just doomed for oil leaks with the damage here or is it possible to successfully stop this leak? It hasn’t been a drip or two either i have to park above an oil pan in my garage to avoid a mess. Not bad enough I have to constantly add oil but enough to make a mess. I attached a picture showing how much it leaks, granted that is over some time and the other shows the damage. Thanks in advance for any advice
Shouldn't be much of an issue. The seal is pressed between the crankshaft and the surface where your pick tool is resting. A small amount of quality sealant applied sparingly in that area would not be a bad idea either.
You expected a miracle within 3 days, that doesn't happen when using a high mileage conventional oil to restore the seals. Mine took a few more days than that but it did completely cure my bad RMS leak. The type of oil DOES have an effect on this, it's well known and is why they make High Mileage versions of engine oils.
I don't think your doomed. You have to use anaerobic sealer on the bearing cap anyways so I would put an extremely small amount closer to where the notch is. Looks like it would help to clean up the crank as well.
@Jerry Bransford If the crankshaft seal goes right before the RMS then is it possible this some how makes a leak happen on?
Example of 2 piece crank shaft seal
Example of 2 piece crank shaft seal
I may be misunderstanding your question but the crankshaft seal & rear main seal are the same thing.
Ok i remember now.
When i replaced my crank i had a 1 piece seal when the kit came with to pieces i was like WAAAAAAAAAAAAAAAAA.
When i replaced my crank i had a 1 piece seal when the kit came with to pieces i was like WAAAAAAAAAAAAAAAAA.
I was replacing a power steering pump one time and I asked the guy at the parts store if I needed DOT 3 or DOT 4 fluid.
He said, "Well I usually don't use brake fluid for a power steering pump"
My mind was in a different place at the moment
Shit can get real. My supra had to use *clutch fluid* from toyota was super expensive..............except that fool worked same on dot3
Every time fate closes a door, it opens a window. Then pees out of it onto my life.My TJ never leaked a drop of oil from any part of the engine. Last year when I was replacing my clutch & had everything apart I was looking at the RMS & thinking how this would be a great time to replace it as a preventative maintenance item, would have been really easy with the trans out. The ‘don’t fix it if it aint broke’ mentality haunted me & I passed, buttoned it all back up.
The RMS began leaking the very moment I returned from my first post-clutch install test drive and hasn’t stopped since.
Somewhere in the universe some force or being is pissing its pants laughing at me.
Oh, as far as your question, I'd say flip a coin.
I let someone drive my 03 with 61,000 miles.
They said “your rear main leaks ! Danger Will Robinson”
I said “so”.
I’m not touching it.
No, only thing I expect is stop of leaks after seal change, regardless of oil.
Since you always put emphasis on your high mileage oil, I did go 6000 miles on penzoil conventional high mileage that advertises expansion of seals to stop leaks. Then I switched back to amsoil, no difference what so ever.
Only difference was between bad seal and good seal.
My apologies to both of us for having tried to help you. No worries, it won't happen again.