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#1
14th March 2011, 02:20 PM
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oil leak
I seam to be leaking some oil on my D2 S8, its leaving a few little puddles every time its parked, i have had the under tray off and found the sump is very wet.
All the bolts are tight though so its not leaking there. Seams to be coming from near the front of the engine on the driver side. I cant really see where its coming from as there is far to much stuff in the way.. Could it be the oil pump seal? Its prob losing about 1l every 500 miles.. I'm fairly new to these engines so any advice would be much appreciated. Thanks. Bo 
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#2
14th March 2011, 03:37 PM
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One of the most common leaks is from the rear output shaft on the gearbox, but you can smell that as it drips onto the exhaust. This sounds like a different location to this though - someone more experienced (most of the guys on here!) will be along shortly I'm sure
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#3
14th March 2011, 04:28 PM
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The cam cover gaskets are a common fail point. Get the plastic covers off and have a look around the seal area. A new set for both sides is about £26.84 from a stealer. Less maybe from GSF or Eurocarparts if they do them.
Part # 077198025
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Conan (the Librarian) Watch it if you dare Currently, 2000 S8, Merlin Purple, Leather Pack 1, Winter Pack 1, SPAX adjustable suspension, AP Racing 6 pot front caliper, 385mm fully floating disks, EBC Yellow Stuff Pads, Black Diamond grooved rear disks and predetor pads, D2 Doctors Brake Block. 1997 4.2 A8SQ - the Projekt. 12 years and ongoing! 1997 4.2 A8SQ - Ming Blue. Restoration sat waiting; saved from the Scrapyard 2003 C5 Allroad 4.2Q - Cobolt Blue. Towing car. Laid up awaiting manual conversion. 2005 C5 Allroad 2.5TDi FE - Grey - Workhorse. 2015 Q3QS SLine - Daytona Grey. Lots of extras! Long Haired Admirals cutter. Previously 2003 C5 A6 1.9TDI FWD - Loaner from D2 Doctor Lifex 1997 S8 - Ming Blue. Loaned out and written off. I loved that car. My first engine swap after cambelt failure. 1996 4.2 A8SQ - Ming Blue. 178k on a cambelt! Trader's 8. Delivered to A8Parts at Lifex. 2003 2.8 A8SQ - powder blueish. Fill in for a while. Sold on. 1998 1.8T A4 Avant FWD. Ming Blue (there's a theme here), PEX for the 97 S8. And a list of non VAG going back 40 years before I saw the light. 
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#4
14th March 2011, 04:47 PM
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Thanks. It's not the cam cover gaskets unfortunatly, as it's dry around there. Also they have been fitted with oem gaskets and some horiable gasket sealent.
I'll have another look with a torch. Thanks. Bo
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#7
14th March 2011, 05:56 PM
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Yes it is. Although the plastic pipe psyche speaks of is the water supply to the heat exchanger.
There is a figure of 8 seal in there; but to change it you'll need the short plastic hose as it generally breaks as you remove the oil cooler! 
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Conan (the Librarian) Watch it if you dare Currently, 2000 S8, Merlin Purple, Leather Pack 1, Winter Pack 1, SPAX adjustable suspension, AP Racing 6 pot front caliper, 385mm fully floating disks, EBC Yellow Stuff Pads, Black Diamond grooved rear disks and predetor pads, D2 Doctors Brake Block. 1997 4.2 A8SQ - the Projekt. 12 years and ongoing! 1997 4.2 A8SQ - Ming Blue. Restoration sat waiting; saved from the Scrapyard 2003 C5 Allroad 4.2Q - Cobolt Blue. Towing car. Laid up awaiting manual conversion. 2005 C5 Allroad 2.5TDi FE - Grey - Workhorse. 2015 Q3QS SLine - Daytona Grey. Lots of extras! Long Haired Admirals cutter. Previously 2003 C5 A6 1.9TDI FWD - Loaner from D2 Doctor Lifex 1997 S8 - Ming Blue. Loaned out and written off. I loved that car. My first engine swap after cambelt failure. 1996 4.2 A8SQ - Ming Blue. 178k on a cambelt! Trader's 8. Delivered to A8Parts at Lifex. 2003 2.8 A8SQ - powder blueish. Fill in for a while. Sold on. 1998 1.8T A4 Avant FWD. Ming Blue (there's a theme here), PEX for the 97 S8. And a list of non VAG going back 40 years before I saw the light.
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#9
14th March 2011, 09:42 PM
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That'll be the breaking of the pipe that I remember then.. I'm pretty sure that the oil cooler can cause leak problems though
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2010 Jag XF 3.0D Portfolio S I know.. I know.. 
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#10
15th March 2011, 07:01 AM
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Leaking camshaft seals are pretty common as well
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