Question about 2002 Audi A6

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Help i think my van may have had 10w30 or 10w 40 oil in it when i got van i changed the oil now its doing a noise like a clicking noise from engine when i start it up and when i drive it it like a nocking noise i have put in 5w30 oil as i was told by the shop it is the synthetic oil i put in it it has done 17000 miles is this oil to thin

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This is nothing to do with oil,check if u get white fumes when u revv the engine

Posted on Feb 07, 2014

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5W-30 is a lighter oil, and although is easier for the engine to push through the oil passages (increasing efficiency). If you were running 10W30 or 10W40, there should not be a reason to change. Also...an interesting phenomena noted when drivers switch to a synthetic, many have stated an increase in valve noise. The oil companies denounce their oil causes increased noise, however the fact that there are many before you that have run into a similar issue cannot be ignored. Since synthetic is lighter and designed to flow/stick like conventional, going to a lighter weight in your case was an oops. Go back to a 10W30 and the noise should go back down a little. If you put in a weight of oil that is significantly higher than the design specifications, your fuel economy will go down (not much for each trip, but collectively it will add up) since the engine is working harder to move the oil.

Posted on Feb 07, 2014

Testimonial: "cheares i will try the 10w30oil and see what goes on"

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