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1999 GMC Suburban 1500 Question: I all of a sudden have water in my oil



Visitor, Phoenix, AZ, January 09, 2011, 13:16

drove the truck fine yesterday all of a sudden it turned off for a couple of seconds then started back up. I checked the engine the next morning before i left to find water in the oil. what could have caused this? any suggestions where to start?

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  • Answer #1

    Visitor, January 10, 2011, 17:34

    Hi, do you have a plastic radiator or have you up graded to a metal radiator? Is your truck equiped with the oil cooler in the radiator you can tell real easy if you have two rubber lines attached to the radiator on the drivers side tank of the radiator. It is common for the plastic radiator to crack or split in the oil cooler area which will cause a leak that can suck coolant into your oil pasages and oil pan.You did not mention how much water you found in your oil I would start by checking the plastic radiator you can by pass the oil cooler lines with a coupler for testing and start the truck up and watch and see if coolant starts to run out of the oil cooler connection.

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