Black Oil coming down from torque converter or engine?

[DanielPace27]

So I have black Oil coming from where the engine mates to the transmission. I took off the transmission and then replaced it recently I just don't want to drive around till I figure it out any ideas??

 

[DanielPace27]

So I have black Oil coming from where the engine mates to the transmission. I took off the transmission and then replaced it recently I just don't want to drive around till I figure it out any ideas??

88 GMC 3500 5.7

 

[Schurkey]

Distributor gasket?
Oil pressure sending unit next to distributor?
Valve cover gaskets?
Rear main seal?
Oil pan seal?
Rear oil passage pipe-thread plugs?

 

[DanielPace27]

Probably the oil pressure or distributor. I didn't get any distributor gaskets with the gasket kit I got

 

[evilunclegrimace]

How much oil? a steady drip while running or just wet/damp? Any of the things that Schurkey listed plus the possibility of the rear of the intake leaking oil were the RTV seals it to the block

 

[alpinecrick]

Just be happy that leaking oil isn't chartreuse in color.

As Shurkey said, here's your options:

Distributor gasket?
Oil pressure sending unit next to distributor?
Valve cover gaskets?
Rear main seal?
Oil pan seal?
Rear oil passage pipe-thread plugs?

It was probably leaking oil before you pulled the trans, now you've noticed it because the trans is (hopefully) clean.

 

[DanielPace27]

It is big leak. It leaks maybe a quart of oil in twenty min. The thing is that my actual oil is really clean and the trans fluid is clear so I don't know why this stuff is black

 

[DanielPace27]

Also I took the intake off and got rid of some liquid gasket in the back between the block and the intake

 

[magimerlin]

Also I took the intake off and got rid of some liquid gasket in the back between the block and the intake

Unless you seal it back up with rtv, or the like, you have now forced yourself to remove the intake again and put that seal back.. that deal has to be there or you will leak out more oil then the Valdeze.

Sent from my SAMSUNG-SM-G891A using Tapatalk

 

[evilunclegrimace]

Unless you put a new rubber seal there, instead of rtv gasket sealant, you have now forced yourself to remove the intake again and put that seal back.. that deal has to be there or you will leak out more oil then the Valdeze.

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The rubber seal has not been used on the intake manifold for over 30 years as per GM. RTV is the proper way to seal the front and rear of the intake manifold.