S2 Stagea With Coolant Issues

[Mr GTS4]

hey guys,

i might have some bad news but i'll ask you guys anyway...

last night after re-bleeding front brakes i saw a small bit of oil underneath the car so i degreased it and washed it down.

after doing that i did the normal things like checked oil and radiator and found the small bubbles coming up while it was idling, then like a white milkly stuff started to surround the top of the radiator, not alot but still noticable. bigger bubbles from time to time and also when revving the engine to about 2k the coolant level lowered abit.

doesn't seem to be overheating at all nor driving any different...

dont' think i've missed anything.

any input would be great.

curt

[KiwiRS4T]

If you have the cap off and rev the engine the coolant level will commonly go down and return to normal when you stop. Watch for the leak to reappear. Bubbles and milky stuff bit of a concern. Try to get your colling system pressure tested (any radiator shop should be able to do it - its a 5min job.

[RubyRS4]

Liek Kiwi said, coolant level varying on engine revs is normal, as your waterpump is 'pushing' (or trying to) more coolant into the block. The bubbles and milky residue is a concern. It does sound like you've got a blown head gasket unfortunately.

Pull your dipstick out and see if you've got any trace of a "chocolate milkshake" there. This will show coolant mixing with oil. If no oil, only bubbles, then its coolant leaking into cylinder.

If you can change the head gasket yourself, you'll save a big bundle.

[Mr GTS4]

check this out

this was after i took the car around the block.

overflow tank looked clean. no water in oil nor sludge under oil cap

what do you think?

[KiwiRS4T]

Don't panic. Are you losing water, overheating? Get the pressure test done and if there is no negative result just keep on driving while looking for any more symptoms. If there is clear evidence of water in the oil or vice versa or if the pressure test shows system not holding pressure then you may need to look at pulling head off.

[Mr GTS4]

losing alittle water that i noticed the other day.. but i had the top tank replaced about 2-3 months ago, so it may have not been bled right.. it doesn't overheat.

i'll have to take it down to the radiator place on my next day for them to check it out.