very bad! change the oil
You probably cracked your head gasket and now have water or antifreeze mixing with oil. Check under your oil fill cap if it looks like a slimy milkshake cahnces are that's the problem.
As much as you can put in the cap of a water bottle.
Generally, heating from below, which creates mixing.
water is mixing with your oil. it might be something as simple as moisture making its way into the oil compartment around the cap, or it could be something much more serious -- like a cracked block. take it to a technician.
Of course as water is heated it expands and some faucets such as American Standard with the CAP WASHER sometimes open slightly and allow water to drip
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Water in the in distributor cap. Replace it.
It is a fluid build up on top of the knee cap
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yellow reside on oil cap is caused by condensation of water and sludge from inside the engine. all petroleum products have a little water in em. your engine needs a good flushing and then oil and oilfilter changes more often