Radiator/if oil cooler built in ---intake gasket ---cracked block --cracked head
Cracked block
Cracked head, cracked block.
SOURCE: 1999 Isuzu oil in coolant reservoir
If oil is geting in the coolant, you most likely have a leaking head gasket. there is one other item it could be if it has an automatic transmission, and that is the transmission cooler in the radiator, if the cooler is leaking it will allow transmission fluid to mix with the coolant.
SOURCE: 2001 cadillac catera: oil in coolant?
The Problem, My friend, is a leaking oil cooler. this item is mounted, inside the engine, under the intake manifold. The cooler or the connections are bad. Coolant flows through the cooler, if it brakes then the oil will contaminate your coolant and make a mess.!! Have it checked. Must times is the seals at the pipe to cooler flange connector. will need new seals.. Hope this helps.
SOURCE: Gasket is blown, water in my oil.
As long as the heads are not damaged from overheating repairing would be an option rather than replacing the engine. Get advise from a mechanic you trust. The intake manifold gaskets are the most common problem with this vehicle if you have the V6 engine.
SOURCE: OIL IN ANTIFREEZE
if this is dexcool antifreeze and it has never been flushed after time it will gum up and turn brown if this is the case have your coolant system power flushed I HAVE BEEN DOING THIS WORK FOR MANY YEARS AND HAVE YET TO SEE A 3.8 MOTOR HAVE A CRACKED BLOCK!
SOURCE: blown head gasket. will rebuilt .uch pressure on pistons and rings, causing failure
The conventional wisdom is that this is a possibility with high mileage engines. But the option of just rebuilding the head versus the entire engine would make the choice easy for me -- I'd rebuild the head... I would say the probability that a new head would damage the engine is kinda low.
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