pull head '86 E350 van, how to
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Dave B.
No scum on when the rad cap is removed but I didn't think there would be since the overflow is right at the top of the neck and it would get pushed through to the overflow tank. Could the running oil pressure in the cooler push through to the coolant but when you shut the truck off the seals could still keep the coolant back from going into the oil? Oil pressure 20-60psi vs 14psi relief pressure on the cap.
The idea for a physical barrier between the oil cooler and the head area on the block is to see where the oil is orginating. I did not flush before the new coolant, the new coolant replaced coolant that was only a couple of years old in a truck that just has 43,000 miles on it now.
No scum on when the rad cap is removed but I didn't think there would be since the overflow is right at the top of the neck and it would get pushed through to the overflow tank. Could the running oil pressure in the cooler push through to the coolant but when you shut the truck off the seals could still keep the coolant back from going into the oil? Oil pressure 20-60psi vs 14psi relief pressure on the cap.
The idea for a physical barrier between the oil cooler and the head area on the block is to see where the oil is orginating. I did not flush before the new coolant, the new coolant replaced coolant that was only a couple of years old in a truck that just has 43,000 miles on it now.
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From: Nutter Fort, WV
Radiator max pressure is 14 PSI set by the cap.
Oil max pressure could easily be 80 PSI on a cold engine.
That pressure difference is only seperated by one O ring in two places in the oil cooler.
Oil max pressure could easily be 80 PSI on a cold engine.
That pressure difference is only seperated by one O ring in two places in the oil cooler.
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Dave B.
Yup oil in the old coolant. I had it in a clear plastic pan and it settled over a week or so. If you skim it with a clean white filter paper you can push it to one end, a fair bit too.
Trying to beat the cold temps and snow here so might be late tues before I can start and run the truck again with some kind of barrier between the oil cooler and head area.
Yup oil in the old coolant. I had it in a clear plastic pan and it settled over a week or so. If you skim it with a clean white filter paper you can push it to one end, a fair bit too.
Trying to beat the cold temps and snow here so might be late tues before I can start and run the truck again with some kind of barrier between the oil cooler and head area.
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Oil in the old coolant and oil showing up in the new coolant... Well, I would still thoroughly flush out the overflow tank and see if any oil shows back up. There's always the off chance that this was a problem fixed by the previous owner, and the system was never flushed afterward. Yeah, I know I'm grasping at straws here, but this is simple and fairly cheap, and takes about 15 minutes. If the oil shows back up, I think Dave S. and KWIKK have it pegged: you're looking at an oil cooler rebuild.
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BruteFord
1968-Present E-Series Van/Cutaway/Chassis
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Jul 29, 2014 08:28 PM
