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Any good quality brand synthetic . 5W20..5W30 or similar.
Shell Rotella 5W40 is about as good as it gets. Always use a OE VW oil filter....buy 4 or 6 and keep the others for next time along with oil drain washers.
VW has recommendations in the handbook if you still have it.
If this is the turbo engine....Engine takes 3.7 quarts, so you need to change it often as you can afford...about every 5000 to 7000 miles.
General rules of thumb:
Low speed engine on acceleration with smoke in the exhaust plume = worn piston rings
High speed engine accelerating (spooled up turbo) with smoke = oil form turbo bearing and/or piston rings
Engine on over run (coasting down, foot off the gas) with smoke = oil from valve guides.
VW/Audi make good engines with tight tolerances so none of the above should apply at 62K miles; just make sure that the oil (the right oil) and oil filter are changed regularly.
Check the intake pipes from the air filter to the intake on turbo in case its got a air leak and its sucking in dust and grit ,If i knew what was being damaged in the turbo i would have a better idea ,if its the bearing then it has problem with the oil feed being partialy blocked with gunge from lack of oil changes which is the normal reason
A new turbo charger is about $340, but you can buy the bearings and seals and rebuilt if yourself for about $100 http://turbosandparts.com/ It is not hard, and it does not take long to do.
I normally do not bother with synthetic, but with a turbo charger, it might be worth it. What really seems to ruin turbo chargers the most is not letting them cool off before parking. Once you turn off the engine, there is no longer any cooling, so the build up heat will burn up the oil and seals. Run the engine for at least 5 minutes below turbo levels, before shutting down the engine.
is there a whistle from the turbo when accelerating if so the baering could be on the way out in the turbo.or blue smoke when accelerating could also be a sign.a blocked air filter would also cause it to **** oil through to the compression hose.
u need to check that oil is getting to it and allso that the engine oil is clean no metal in it i would drain oil the and flush through have look for bits in it
What engine do you have? If you have the 1.8 turbo engine, you absolutely need to run synthetic - the 1.8T engine is known for oil sludge issues, and running synthetic will stem that a bit. You'll still have sludge issues, but they can be held at bay. Use synthetic oil only, and do a treatment with SeaFoam (available at parts stores) every third oil change, and you should be fine.
Now, just because you need synthetic oil, does not mean you need to pay $13/qt for it from a dealer. Mobil1 synthetic is excellent oil (I used it for years in my 500+hp twin turbo 300ZX), and it's on the official Audi list of approved oils (Audi and VW are part of the same conglomerate). It runs less than $5/qt. Get Mobil1, and your oil filter, at the parts store, and change your oil at home - it'll take you 20 minutes or so and save you a bundle.
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