ur-q using oil

[quk@sievers.com (Phil Payne)]

In message <33987BFE.B8F@iol.ie> George Harrison writes:

> Relativly low oil consumption (about 1 litre every 1k miles) when driven
> calmly at any speed up to the max (fairly regular) but town driving is
> another story. If I accelerate hard to anything past 3500rpm and then
> back off sharply the cars behind disappear in a huge cloud of smoke. The
> higher the revs the more smoke.

I must once again express my bafflement at 1 litre per 1k being considered 
"low".  Neither my ur-quattro (140k miles) nor my Coupe GT (250k+) use any oil 
between changes.  Yes, I _do_ know what the book says.

> When I say 'disappear' I do not joke.  The most recent 200miles cost me
> about 1.5 litres of oil.

I've only seen this once, in an over-filled engine.  But it happened when 
_hitting_ 4200rpm, not when backing off from it.

You've either got the mother of all valve guide leaks, or extreme axial play in 
the turbo.  I think you have to take off both ends of the turbo ==> intercooler 
hose, and check inside both the turbo and the intercooler.  The turbo for axial 
(as distinct from radial) movement, and the intercooler for excessive oil.  If 
it's just slimy, as usual, then it's inside the head.

I've been thinking about a third possibility - a head gasket failure.  Are the 
plugs equally fouled, or is one much worse than the others?

--
 Phil Payne
 phil@sievers.com
 Committee Member, UK Audi [ur-]quattro Owners Club