FloridaAKM
Well-known member
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- Gainesville, Florida
I have put unused motor oil into the tank with the diesel fuel only to cause problems with the engine running right. The mix stratifies & will cause the engine to missfire badly until the motor oil is diluted again with a fillup of diesel fuel; then it will run as normal. I would never run used diesel motor oil or any other type of used engine oil because of this & the fact that the microscopic carbon & metal particles will screw up the HH ability to make pressure after using this mixture.