jhoeppel

adding oil between changes doesn't argue against a 10k drain interval. In fact, it makes longer intervals safer. According to MB research cited in some SAE conference, topping off between changes replenishes additives and extends the safe intervals.

Oil analyses I've done on VW engines with 10k changes (synth) repeatedly showed oil in good condition after 10k miles.

TTapsale

Some do & some don't.There's lots of variables. Definitely check your oil more often. Oil is sooooo much cheaper then engines !

NeimanTT29

If "some do & some don't" something is wrong with the ones that do!!

NeimanTT29

Your using oil some where. Take the downpipe off and look for it there.

BillK

Mobil 1 is just fine for 10K intervals but I would drop that to 5K for turbos.

Dino oil is just fine if you're going to change it every $3K, but it's your money, feel free to spend it as you see fit...

slater

i tend to engine brake a lot, and in the mountains on my favorite roads thats at higher RPMs. i've heard this tends to burn oil.

peter

SprinTTer

Yes, engine braking and high revs will cause some oil consumption.

BoschTT

No you just linked that to an A4,, in the TT 2000 manual.. it's every 5K miles.

msauve

the TT is on page 4 of the linked-to document. Since MY 2001, Audi has recommended 10K oil changes for the TT (except for an initial change at 5K for MY 2001 only).

The engine hasn't changed during those years, but the official factory recommendation has - to 10K oil changes. Audi has a roomful of tribologists to figure this stuff out.