In retrospect the cause of the grey oil problem on my bike is that the enclosed y breather hose system see images below has transfered moisture from the head direktly into the engine again trought the starter motors breather hose. Because i almost never drive the engine really hot.
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Gray looking motor oil. For example one brand might start to get dark around 3000 miles whereas another brand of engine oil starts to get dark by 5000 miles. Water in the oil would make it a. Topic december 21 2014 at 1205 am 640742. This engine oil color indicates that antifreeze from the cooling system has gotten mixed in with your motors lubricant almost always due to a failure of the vehicles head gasket. Basically it can blow by overheating which means the gasket get. If it is a whitish grey colour then possibly you have blown the head gasket of your engineexpensive job to fix.
If youre unsure you can always consult a mechanic. Just look for the obvious color changes and dont stress too much about it. This topic contains 10 replies has 6 voices and was last updated by martin vigesaa 5 years 4 months ago. Grey would indicate metal wear in the engine thats in the oil possibly so i would take a small sample of the oil and have it analyzed by an oil testing service. If you notice this unusual oil color first check your radiator or overflow reservoir to see if its low. Home forums stay dirty lounge service and repair questions answered here engine ticking and grey oil on oil cap.
