I currently have the engine and trans out of my S C to fix an oil leak.
It's been a few years since the last drop, but a slow leak onto the heat exchanger has driven me to try to fix it before I have a fire.
The source of the leak is the oil cooler. Once I got it off the seals look ok, but there is a lot of oil on the fin section of the cooler. So following suggestions from members here I immersed the cooler in water and pressurized it to around 10/15 lbs. just blocking the other port with my thumb.
No signs of bubbles. Does this seem like enough pressure to get a good check for leaks?
In looking closely at the oil pattern on the cooler there is some sign of possible blow by at the bottom seal. I'm wondering if it's likely that oil leaking from this seal would be able to migrate sideways and then up onto the fins of the cooler?
I hate to put it all back together with new seals and find that I missed the actual source of the leak.
Here is a look at the cooler, some smudging has happened from handling.
Ah, the pic is lower in this post.
At first I thought the oil had spread from the fin area around to the mounting face side
But after pressure testing the cooler it seems that the leak may be from that lower seal.
Any insight would be appreciated.
Also after the last engine drop, when the motor and trans mounts were replaced, there seemed to be a noticeable increase in engine vibrations getting into the cab.
Now in looking closely at the area just in front of the trans, there are signs of rubbing from the trans on the cross member . You can just see the shiny spots on the crossmember.
So I'm looking closely at the motor mounts to see how the engine and trans have moved forward to come in contact with this crossmember. And How do I get it to a position a little more aft to get clearance?
Here is the oil pattern on the cooler.
