4.5 hour oil change. I rebuilt the oil cooler while I was at it.
Two weeks ago I was in KC when I notice the axle tube under the front of the truck was wet. I peered underneath and found a slightly loose hose clamp on the radiator. After I tightened it, I checked the fluid on the tube: oil. Further investigation showed my oil cooler was blowing crude past the o rings when cold. After some very anxious googling I found that the problem goes away once the motor is warm and the seals expand. I was pretty relieved as I thought I would be tearing my motor apart in MO versus CO.
Anyhow, I ordered the new o ring kit from Bob at dieselorings.com and put it in tonight during my oil change. I was due for new crude anyhow.
Needless to say, it was a messy venture. But a test fire has shown that everything is holding as it should. Which is good. Because I'm putting 1200+ miles on it this weekend.
I would DEFINITELY recommend this to anyone with 150k+ on their motors. I did not take pictures, but what I found was about 50% of the coolant passages through the cooler were clogged with crap. So, I was only getting about 40-50% effective oil cooling.
My original plan had me using the oil cooler from my builder motor. That plan was quickly scrapped when I found this.
It's full of aluminum shavings from when two pistons proved the 1220*F melting point.
