milky oil - Triumph Forum: Triumph Rat Motorcycle Forums
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post #1 of 14 (permalink) Old 10-07-2019, 05:28 AM Thread Starter
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milky oil

Hi, I'm hoping for a pointer on this, I have a 96 t,bird 900, last week I noticed through the glass the engine oil looked milky, I drained and replaced it just to be sure, but it has turned milky again. I am assuming a breached gasket, which is most likely. Regards Phil
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post #2 of 14 (permalink) Old 10-07-2019, 08:31 AM
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I'm afraid it's either the head gasket or one of the cylinder liners. I would stop riding it as milky oil makes a lousy lubricant.

You can have the oil tested for antifreeze if you're skeptical, and there is also a test for combustion products in the coolant, which would point to the head gasket.
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post #3 of 14 (permalink) Old 10-07-2019, 09:44 AM
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What kind of riding do you do? Short trips? In town? Has your coolant level dropped? How long have you had the bike?

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post #4 of 14 (permalink) Old 10-10-2019, 06:16 PM
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I'm with WSC on this. Better check it out. Better safe than sorry. If the problem has returned fairly soon after changing the oil, something is wrong. Don't know where you are, but in most part of the U.S. the weather is still too warm to be having condensation problems. ...J.D.
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post #5 of 14 (permalink) Old 10-10-2019, 11:39 PM
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Milky oil will ruin those bearings right quick. Stop riding until it is fixed.

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post #6 of 14 (permalink) Old 10-12-2019, 05:31 AM Thread Starter
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okay, many thanks, I'll take the head off this weekend. Head gaskets appear to be a hell of a price. Phil
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post #7 of 14 (permalink) Old 10-16-2019, 05:29 AM Thread Starter
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I've taken the head off, gasket is not broken but looks worn-out, I can't drain the coolant from the front of the cylinder barrel , it just sits there. Phil
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post #8 of 14 (permalink) Old 10-17-2019, 02:15 PM Thread Starter
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I'm baffled, hoping someone can explain how the coolant in the cylinder block gets back into the coolant system. regards Phil
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post #9 of 14 (permalink) Old 10-17-2019, 02:37 PM
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I don't understand your question. Maybe this picture will help your understanding:
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post #10 of 14 (permalink) Old 10-18-2019, 05:13 AM Thread Starter
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thanks John, before I took the head off I split the water pump to drain coolant, when I lifted the head gasket the front of the cylinder barrel was full of water, I had to syphon it out. when the engine is running normally how does that water get recirculated . Regards Phil
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