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Re: Oil in Coolant / Antifreeze, causes, oil cooler ? Posted by SWEDECAR [Email] ![]() ![]() ![]() In Reply to: Oil in Coolant / Antifreeze, causes, oil cooler ?, RonH, Tue, 26 Apr 2005 16:29:22 Members do not see ads below this line. - Help Keep This Site Online - Signup |
It could very well be the engine oil cooler that is leaking.
It is mounted between the two cylinder banks under intake manifold so it is quite a bit of labor to get it replaced.
The cooler is also quite expensive ($506.00)so you need to be sure about it.
To be able to see the leak from the cooler, after I have removed it from the engine I fill it with oil and leak dye, plug one end and put pressure on the other end of cooler and study the core with a "black light". Sometimes it takes an hour before the leak show up and sometimes I need to heat up the cooler so that the crack expand a little.
Is it a stick shift or automatic? If auto it could be the transmission cooler inside radiator, but in thoses cases the coolant turns pink.
No, the V6 doesn't have the same problem with loose head bolts but it could still be bad head gaskets all depending on how many miles it was on the 3L engine you installed.
The picture is from a 9-5 but the location of cooler is the same, in between intake ports.
Anders
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