Milky coolant
Aug 16, 2009 | 12:04 PM
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From: NW Pa.
Milky coolant
What did I do? Is it as bad as I think it is? Head gasket?
Aug 16, 2009 | 12:09 PM
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what engine,year,milage,and has it ran hot. need a little more info
Aug 16, 2009 | 12:13 PM
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From: NW Pa.
"89 7.3 with 182000 mi. yes it got hot. Temp read 220-230. It has overheated before but never been a big problem. I stop and wait.
Aug 16, 2009 | 12:41 PM
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could be cavatation or could be bad seals in oil cooler, or head gaskets
Aug 16, 2009 | 12:44 PM
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If the oil is ok, then my guess is that it's probably the oil cooler. I've never dealt with one, it sounds like a pain, but not nearly as bad as a head gasket. I think you need to jack the motor up a bit to get at it...
Aug 16, 2009 | 02:10 PM
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could still be cavitation need to have cooling system pressure tested
Aug 16, 2009 | 06:56 PM
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From: Manitoba
Oil cooler would be my first choice..........if the coolant is milky.
Aug 16, 2009 | 11:07 PM
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From: Nutter Fort, WV
I also guess the oil cooler.
After it sits a while you should see oil on top of the coolant.
220 to 230 is not really that hot for a diesel if you were working the engine.
Are you running SCA's in the coolant?
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Aug 16, 2009 | 11:17 PM
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From: NW Pa.
I'll drain the radiator tomorrow and put all new in. Along with sca's. Coolant is pretty old. Hopefully that will fix it. I just got done reading on cavitation and learning about SCA's. This forum is fantastic. Thanks to all that reply to me. I really appreciate all the help.
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