1693TA
Senior Member
Started my water wagon to put it in the shop this evening just as it was getting dark as it's supposed to snow tonight. Truck started right up and I noticed the oil pressure was unusually high. Getting out to get a look under the hood while the engine idled, I heard a faint "pop" and seen engine oil streaming out from underneath the truck. Jumping back into the cab and yanking the kill cable the engine promptly shuts down. I get to looking and the oil cooler has blown it's seals at the inlet flange and had been spraying oil several directions. Don't know why that would have happened but I'll need to pull the oil cooler for rebuild and see if the oil pressure relief valve has stuck closed. The oil cooler is simply a bunch of tubes which the oil passes through and they are surrounded by engine coolant. I would think the oil pressure relief valve should have relieved prior to blowing a seal out. If the pressure gauge reading were not noticed high, I'd simply think the seals just went from age. The oil is Delvac 15W-40 and the oil pressure was normal last run of the truck. Don't know why the oil would have dead headed causing elevated pressure as it's not really cold out yet?
Oh well, it'll give me something to do.....
Oh well, it'll give me something to do.....