Originally Posted by TBell2
What engine did you replace it with? I have a friend who owns an '05 that just died. $2000 for an oil cooler. She wants to replace it with a new engine since it is nothing but TROUBLE.
It's nothing but trouble because she is not monitoring what is going on and a new motor won't solve that. The oil cooler clogs up because the Ford Gold coolant is crap. It has silicates that don't like having to go through the egr cooler with high EGT's and they turn into a gell and fall out of suspension clogging up the oil cooler. That restricts coolant flow to the egr cooler so that it can no longer carry off the heat from higher EGT's and the coolant flash boils creating high pressure in the cooling system and the truck pukes coolant out of the overflow bottle. If it isn't corrected the EGR cooler Ruptures from the repeated pressure letting coolant into the intake and hence the cylinders where it is vaporized by the high temps again creating high pressures resulting in lifted heads, blown head gaskets, and stretched head bolts. Putting a new motor in with the same crappy Ford Gold Coolant will just cause the cycle to repeat.
The answer is to flush that crap out and use an ELC coolant like CAT, Rotella, Delo, Zerex. They are silicate free and pretty much good for the life of the truck. Delete the egr system if you can where you live. If you can't replace it with the updated one from Bulletproof Diesel. Rebuild the oil cooler. If the head gaskets are gone replace them with Black Onyx gaskets and ARP head studs. Now you have a reliable truck that isn't going to keep blowing up on you.