mayo in an old A4, terminal?

Question

Hi all,My dad phoned me earlier to tell me his P-plate Audi A4 1.8 with 114kon it has 'foam' in the oil filler cap.  He suspects it might be thehead gasket but doesn't know if it's going to be worth the effort toget it fixed or just chuck it.  I've been reading some previous 'mayo'posts and am going to tell him to give it a good long run (but becareful to watch the temperature) and if that doesn't cure it/help itsignificantly then it probably is the gasket, at least.So, is there any 'better' advice?  And how much would it likely costhim to get it fixed if it's the gasket or head itself?TIAChandy

Nik&Andy · Accepted Answer

I'll give you £200 for it - sold as seen.Andy

Moray Cuthill · Answer

Provided there's no signs off oil in the coolant, coolant in the oil, and it's not using coolant, give it a good long run. Chances are it's just moisture build up inside the engine, or it could be a blocked engine breather. But certainly first thing is to give it a good run.

R. Murphy · Answer

I'd echo that - I have to clean the stuff out of my Astra's oil filler cap every week during the winter.

But thoroughly clean the oil filler cap and as far inside the hole it goes into, first.

It might be possible to get a garage to pressurise the cooling system to see if there's any sign of leakage ...

Mungo "two sheds" Toadfoot · Answer

*Waves*I'll have it even if it *is* the head gasket. Tell him to chuck it - in my direction.Si

Guy King · Answer

The message from "R. Murphy" contains these words:

Rover had trouble with people complaining about it in the filler/separator on the Maestro 1600 S-series engine - so they lagged it to keep it warmer and stop it condensing!

mayo in an old A4, terminal?

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