Oil in coolant? - Suzuki GSX-R Motorcycle Forums Gixxer.com

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post #1 of 2 (permalink) Old 12-22-2018, 07:07 AM Thread Starter
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Oil in coolant?

Gonna seem stupid but I can’t tell if this is old bad coolant, or oil in My coolant. I haven’t had any coolant in my oil. I decided the other day to change my fluid since I bought the bike used recently, an 02’ GSXR600. I saw that half of the fluid was gone, and there was a lot of that brown fluid/sludge on the cap and inside the overfill tank.
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post #2 of 2 (permalink) Old 12-22-2018, 01:46 PM
You should listen to me. No, seriously, listen to me.
Join Date: Oct 2008
Location: Santa Barbara
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Re: Oil in coolant?

In my experience that brown sludge is always oil mixed with antifreeze. You might have a leaking head gasket but I'd first remove the oil-coolant intercooler and look for leaks in it.
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