Dalton1 Posted 2 hours ago Share Posted 2 hours ago I have a 2013 Granite 405 MP7 with Allison 4500rds. I sent my oil to be tested and it came back with coolant in the oil. What are some common causes of that? Truck starts and runs excellent with no smoke. Haven't put many miles on it but doesn't seem to be going through coolant so must be fairly minor leak. Coolant looks clean. I was thinking maybe egr cooler or injector cups? Any thoughts would be appreciated, thanks in advance! Quote Link to comment https://www.bigmacktrucks.com/topic/76168-mp7-coolant-in-oil/ Share on other sites More sharing options...
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