well crap...advice needed

milky on the bottom of the cap is from the oil being airated...

what does it look like on the dip stick?

if you are losing coolant And white smoke out the exhaust I would suspect a head gasket. Like srtthis said, whats on the dipstick? if its milky too, thats another indicator of head gasket. It could be worse than just a gasket though.

If only on hard accel I would venture lower intake gasket. If that looks good move onto the head gaskets. I would suggest a pressure test on your cooling system first.

Do a compression test to help narrow down the possibilities between a leaking lower intake manifold and a blown head gasket.

Only use a compression tester with a screw in adapter for the spark plug hole. The other type leaks too much to get an accurate reading. Your local auto parts store may have a compression tester to rent. If you do mechanic work on your own car on a regular basis, it would be a good tool to add to your collection.

With the engine warmed up, remove all spark plugs and prop the throttle wide open, crank the engine until it the gage reading stops increasing. On a cold engine, it will be hard to tell what's good & what's not. Some of the recent posts have numbers ranging from 140-170 PSI. If the compression is low, squirt some oil in the cylinder and do it again – if it comes up, the rings are worn. There should be no more than 10% difference between cylinders. Use a blow down leak test (puts compressed air inside cylinders) on cylinders that have more than 10% difference.

I generally use a big screwdriver handle stuck in the TB between the butterfly and the TB to prop the throttle open. The plastic is soft enough that it won't damage anything and won't get sucked down the intake either.

A battery charger (not the trickle type) is a good thing to have if you haven't driven the car lately or if you have any doubts about the battery's health. Connect it up while you are cranking the engine and it will help keep the starter cranking at a consistent speed from the first cylinder tested to the last cylinder.