Oil cooler help!!

[Suzuki6mx]

I posted this in the 6.0 thread by accident...was early in morning and rushed to post...anyway.. My oil cooler is junk and I need to get the two ends off..one end is off any tricks to get the ends off I got the smaller end..but the end with glow plug is really hard any tricks or tips would be great

[TOW RIG]

I just replaced the o rings in mine. I had a buddy hold the tube and I grabbed the cap, turned and pulled at the same time, popped right off!
there even more fun going back on. Push down and turn at the same time.
O rings are expensive but should be done. mine were severly dry rotted, but still didnt leak

[Suzuki6mx]

Ok I'll try twisting and turning...mine leaks and how much would u say it could leak if O rings are shot? Mine was a good constant drip while running

[TOW RIG]

If its leaking between the pipe and cap, then its definetly getting past the o rings. theres also coolant running through it as well.