View Full Version : coolant in the oil
03-04-2008, 04:06 PM
b-4000 mazda 1998
I found coolant in the oil (look like greennish color and the oil level is too high). I want to know if a chemical product can do a good temporary job.
As I know, the problem is a gasket problem or a crack in the block.
Block sealer is quite unlikely to help and can make the repair more expensive (i.e., you may have to resurface the block, whereas this would otherwise not be necessary).
A cracked block is very unlikely unless you have substantially overheated it, or frozen coolant in the block. Cracked HEADS are considerably more likely. Before an overheat cracks the block, it's likely to scuff the cylinders, flatten the pistons, and seize the engine.
Running an engine with coolant in the oil will destroy it. Letting it SIT with coolant in the oil may destroy it. Crank and rod bearings don't like coolant.
03-04-2008, 11:15 PM
Coolant in the oil will make a murkey whitish color in the oil, gasoline in the oil on the otherhand will look somewhat greenish/brown. Was the oil very thin?
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