G-turbo issues??

[ubguessin]

Hello all, so recently got my 1HD-T rebuilt had it back since just before Christmas 2025.
Anyways got under the truck today because I need to re-place my hub bearings and was doing some teardown. (Prolly knuckle rebuild as well).

I was examining my G-turbo and noticed an oil "leak." Pics are included. Turbo has maybe less than 30k miles
My question is, is this related to turbo problems, Seals or catch can issues? The oil appears to be coming from the intake boot as well as the oil drain tube...

 

[OGBeno]

You have a leak at the gasket. Replace gasket and hose. Reinstall.

 

[ubguessin]

You may be right, the only other concern is that on the last pic you can see on the intake pipe has oil seeping past as well. Even with a catch can.

What adds me to thinking I am having turbo seal problems is that the exhaust has a haze to it as well.

 

[TheBussman]

catch cans done wrong can make some big leaks too. needs a through clean and recheck, how good of condition is the inlet hose to the turbo?

 

[SNLC]

You must drive in salt and salty conditions?

Everything looks way older-more used than 30k miles and a fresh rebuild to me.

Cheers

 

[cruisermatt]

You must drive in salt and salty conditions?

Everything looks way older-more used than 30k miles and a fresh rebuild to me.

Cheers

Yeah dude, looks more like 30 years, then 30k miles

 

[Eurasiaoverland]

Have you checked for blow-by? Take the PCV hose off the valve cover and rev the engine up to see if you're getting pressurisation.

Take the intake hose off the compressor housing and check for axial play in the impeller.

 

[AussieHJCruza]

Catch cans often cause more problems than they solve. If you don't have EGR, get rid of it IMHO.

 

[Dougal]

Is the crankcase pressurising? That will make a turbo bleed oil from everywhere.