Driving the new rig around the yard a bit more. getting to know the clutch a little.
Today was the first time I had tightened down the coolant overflow cap ( I would assume I may have achieved some
internal pressure)
about dark I took the cap off and stuck my finger in to see If I needed more water. Water was about 1/2 way up the tank.
not particularly warm- like bathwater. Maybe 120f - no more. Didn't drive but about 5 min. Drove it about 20 min. earlier .
Anyway when I pulled my finger out I had a little glob of oil on my finger. It looked like nice clean engine oil. not grimy
residue from the cooling system. Definitely oil. I took a strong led flashlight and looked down into the water and only saw 2 more little droplets the size of a BB. The one on my finger was bigger.
My first thought was the head gasket- but I have a brand new cummins brand gasket with A1 head studs torqued to
115 ft-lbs. I did the first torque at 115. then about 3 weeks later I did another to 115. (did not run in between)
I got a little movement on a few of the studs on the 2-nd re-torque. (done on engine stand )
So Im not expecting a leak there ( I hope !!!!!)
The oil cooler however is another story.
The oil cooler is about the only part I DIDNT remove and inspect when the motor was on the stand.
It is a 93 motor. Is it likely that the cooler has a rust pinhole and the first cooling system pressurization may have
made it leak a little oil into the water ? Could it be the gasket too ? Easy enough to pressure test the cooler once its off....
I am wondering if I should drain the oil into a new 5 gallon plastic bucket and check for any water ?????? If it is OK
I can just pour it back in. (brand new rotella)
The cooler should be pretty easy to change out if needed.
Would yall suspect the cooler before the head gasket here ?
Should I run it a little more and keep checking to see if I get more Oil in the water ? (or dump the oil and water right away--)
Tim