Where is this coolant dripping from by my alternator?

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02-07-2016, 09:31 PM

#11

twentysevenlitres

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Quote:

Originally Posted by 2001 S8

Based on this forums consensus, use the Gruven Parts replacement pipe. Do it once and forget. This is what Audi should have used from the factory.

Concensus used to be the Bufkin pipe of which the Gruven pipe is essentially a copy. In fact Gruven originally started making a stainless pipe about 18 months ago and changed it to aluminium after a debate on this forum over galvanic corrosion.
Aluminum Audi OIL Cooler Pipe FOR 4 2L V8 Engine A8 A6 RS6 Phaeton | eBay

Why you'd put a plastic pipe back in is beyond me...
Either the Bufkin or Gruven (aluminium) replacement pipes are much more suitable.

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02-08-2016, 03:46 AM

#12

MikkiJayne

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Hmm galvanic corrosion is a good point. I used a brass pipe on mine since the Gruven one isn't easily available in Europe - the only alternative is 'better plastic' from Germany

. Now I'm thinking that might not have been such a good idea

In theory they are electrically isolated by the o-rings, but if stainless wasn't going to work then brass won't either...

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02-09-2016, 08:35 AM

#13

gbmarc

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using plastic pipe

I used a new plastic pipe because I needed the car back on the road and the Audi dealer is only a mile away. I also figured that it's taken 14 years for this one to disintegrate and I don't think I'll still have this car in 14 years!