Rear main seal leak? Pics attached

[jdwood1111]

For anyone wondering - doing rms with oil pan at the same time was a right call.
My mechanic said both were leaking once apart, rms cover had loose bolts.

Should be picking up her today or tomorrow.

Replaced: rms with cover plate, oil pan with all parts, oil pickup gasket, tranny cooler lines

What’s was the damage for all that?

 

[89Suburban]

Wouldn’t it have pressure without dod anyway since oil pressure sensor is there? Mine is without dod but was pissing oil everywhere around the cover

The OP sensor is behind the valley cover screwed into the block casting. These valley covers are all known to have the bolts vibrate loose and then harmonic vibration and accumulating dirt and leaking oil act like sandpaper on the gaskets IMO. Add to that high mileage and accumulating blowby increasing the crankcase pressure.,,, DAMN I need to get to bed.

 

[m1dn]

What’s was the damage for all that?

1700 CAD Roughly - Oil Pan ( new, gm original ), Tranny cooler lines, RMS Cover + Gaskets, Oil pickup tube o-ring, Amsoil oil, PF48 filter

 

[Logani]

The OP sensor is behind the valley cover screwed into the block casting. These valley covers are all known to have the bolts vibrate loose and then harmonic vibration and accumulating dirt and leaking oil act like sandpaper on the gaskets IMO. Add to that high mileage and accumulating blowby increasing the crankcase pressure.,,, DAMN I need to get to bed.

It's little grungy back there but I don't see it pissing out. Still, I'm going to replace it when I replace the knock sensors (again and with quality parts).

 

[89Suburban]

It's little grungy back there but I don't see it pissing out. Still, I'm going to replace it when I replace the knock sensors (again and with quality parts).

Yeah that's the early stage there. Good pic.

 

[JonnyTahoe]

Mine has been dripping for years. 2000 Yukon RWD from Texas. No Transfer Case to remove Just waiting for the trans to start acting up.