My cadillac deville keeps getting oil in the radiator. can you tell me what the problem maybe. Is there a repair manual(free) that i can get. Its a 1989 Cadillac Deville

Try this to see if helps you figure this out. Try filling up the radiator with water. Start your engine with the radiator cap off look for bubbles the bigger the bubbles the worse the leak. Look for tan colored oil on the dipstick. When oil mixes with water it turn a creamy tan color.

if you can repair it yourself have a go .if not then way up the cost of a garage repair to see if its worth keeping or trading in

Check to see if you have flow through the entire radiator.If part of the radiator core is cool to the touch when the engine is at operating temp, this indicates restricted radiator flow. If the entire radiator core is not allowing water to flow through, cooling will not be at all efficient. Also a good idea would be to purchase a block tester. available at napa and other reputable parts houses for around thirty dollars. You remove a small amount of coolant, and put the tool in the radiator, or pressure tank opening. If there are any combustable gasses present, i'e' exhaust, this would indicate a head gasket breech, (or maybe worse) and would indicate that it's time to stop looking for a simple problems, and get proffessional help. Good luck to you!

check its not in the radiator ,the cooler is inside the radiator -- take rad cap off and check for oil

get a couple different quotes and visit a some garages and ask there opinion look at your oil on your dipstick if its creamy white then theres a problem

Just wondering if you put in the correct amount of oil and tightened everything back up properly...

If you have change the radiator , then check the thermostat for its temperature while running . then try to change the engine oil it could be one of the reasons that your car is having a overheat problem.

Drain plug should be on the drivers side of the radiator, lower back (towards the engine) When placing the drain plug on place use some oil on the O ring to ensure a good seal when tightening it back in place. Good luck and keep me posted. 

hello i have a 1998 cadillac deville course. an i been having the same over heating problems with mine i been taking it to mechanics an no one seems to know even the caddy dealship its overheating i checked the termostat water pump radiator all hoses was wondring could you tell me what you did or what you are doing to fix your problems my email is [email protected] thank you very much