Question about 1994 Chevrolet K1500
Is there any history of engine oil coolers leaking oil into radiator? Is there any history of intake gaskets able to transfer oil to antifreeze without antifreeze getting into the oil? Is there any history of head gasket failure causing oil in antifreeze but not coolant into oil.
Posted by Anonymous on
Hi most proberly head gasket,but check that no object has gone through the fins of the rad and oil cooler,hope this was some help.
Posted on Mar 07, 2018
Generally, Which system had the most pressure when the leak occurred? If the oil system had the most pressure, at that time, then it makes sense that you could get oil in the cooling system with no antifreeze in the oil. Or vise-versa.
There may be other variables? Just my 2 cents.
Posted on Mar 07, 2018
Hi there, your in the right track about your guesses, better start small. Start with the oil cooler. I not very familiar with the monte carlo but if it has 2 coolant hoses one for input and the other one is output. Change your oil , then remove the two hoses from the oil cooler and plug-off the hoses temporarily( I use a rounded wood). You must secure the hoses to avoid leaking or bursting that why I use wood to plug the hoses(tight fit) then secure them with hose clamps. Next is to start the engine and wait until it warms up and let it run for a while. Well if find no coolant in your oil then surely your oil cooler is at fault.
But then again, I don't know the leak rate of your coolant in your engine. If you tried removing the radiator cap and run the car a while and theres no coolant leaking then we are talking about a small fissure, but if your coolant still leaks in then its a big crack.
Hope this helps.
Posted on Sep 29, 2009
SOURCE: Radiator fluid getting into oil
You might not notice a change in performance for a while, but the head gasket is blown and the water seeps down there at night or when it is cool. It won't do it when it is running because it gets burnt. Check your exhaust for steam, and get a compression check done, it will tell which cylinder is blown. I just had a car blow on me, ran fine for many miles, would eat coolant though. I never let it overheat, but then one day, kaboom, all done, wouldn't run again. The hole in the gasket was smaller than these letters I'm typing, and the one cylinder that blew was squeaky clean, from the steam. Hope this helps.
Posted on Oct 11, 2010
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