1979-1993 & 94 Conv [Subscribe to Daily Digest] |
You ought to flush with a citric acid flush a couple of times (driving for a week or so between each flush) and change the coolant each time - that should clear out most of the oil. When the internal surfaces have oil stuck to them they do not transfer heat as well. The radiator is probably the worst spot because it is the coolest part of the system.
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