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Old 11-08-2011, 10:38 AM   #164 (permalink)
meelis11
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Join Date: Feb 2009
Location: Estonia
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Green frog - '97 Audi A4 Avant 1.9TDI 81kW
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Quote:
Originally Posted by jkv357 View Post
Artan - to prove your point you need to have the oil analyzed. That will tell you if it is still usable.

When you say "it's fine" - what does that mean? Is 100,000 mi without an oil change enough? If the engine is junk at that point, have you gained anything? You'll have to wait and see.

Have you ever seen stone get worn away by water? Oil under pressure with micro particles of abrasives (metal) will wear away metal parts - slowly, but surely...
Could not say it better.
Artan, for now you dont prove anything in long term. For now you just skipped one oil change and little bit more. Get your oil analyzed...additives get used in oil and acids are starting to build in oil over time.
Drive 200.000 km without changing oil and compare engine parts to those where oil is changed regularly. I am little bit sceptic that it lasts 200.000km with same oil...but even if your engine can live so long... I still believe that it is more worn than regularly oil-changed engine.

PS! I have read topic before I started to write.