Question for f5fstop

[NoMoGMPG]

Originally Posted by Hummer3

My H3 has 1400 miles and the rear engine seal is leaking. I did change to Mobil1 and they say Mobil1 can always find a leak. The leak is a small drip coming from the rear seal down to the rubber plug under the seal and flywheel. Will the engine need to be pulled to replace?

Thanks for your advice

No, the proper procedure is to pull trans/tcase, not the engine.

[f5fstop]

Originally Posted by NoMoGMPG

No, the proper procedure is to pull trans/tcase, not the engine.

X2

As for the leak being from synthetic oil, tell them they are full of BS. Oil is oil, Mobil 1 meets AND EXCEEDS the GM requirement, and there should be NO leaks. Not that hard to remove T/case and trans on the H3, and then remove the flywheel and install a new rear seal. Probably not installed correctly in the plant. Not a big problem, but like axle seals, some will leak until repaired.

[Hummer3]

Thanks for the information. I will take it in tomorrow to the dealership and see their actions.

[macwag]

I developed a leak from my engine rear main seal at 2400 miles. I agree with f5fstop "Not that hard to remove T/case and trans on the H3, and then remove the flywheel and install a new rear seal." My brother is a GM mechanic and did the job for me. Everything was covered under the warranty. I have been running with Mobile 1 ever since with no more leaks.