Red Line.
Time to change the oil, anyway, at 3,867 mi. I do 5-6k on the regular, but would use this as an opportunity to change.
I like red line oils, because they have a bit more zddp which is nice for the rockers.
I have an 2007 A4 2.0T base. I bought the car with 120k miles on it in 02/19. Yesterday I hit the 224k miles on it. She's my daily driver, over the years I have changed/did the engine oil every 4k miles, car filters all over, wheel alignment, tires, brake pads, rotors, and the battery. Nock on the wood, my baby have been taking car of me. I'm actually surprised that this model is solid af.
On chilly winter mornings (SF Bay Area) the car did not like reverse or first gears. Subsequently switched to Red Line engine oil. More power, better mileage.
Ran Redline 5w40 when it became purely a summer car in ~2013. ... Not seals are leaking, no issues of any form. Car has been Cobb stage 2 91oct tuned (OTS, not pro-tuned) almost 14 years, with a Crawford v2 AOS, Killer B oil pickup + windage tray being the only reliability mods, and it doesn't burn a single molecule of oil.
I always buy OEM oil from dealer and then get it done at the shop or do it my self sometimes. Just prefer that way cuz I care way too much.
Ive been using 5w40 for 100k miles and my engine is happy as can be. It actually is noticeably smoother with thicker weight
I just put Redline 5w-30 into my 2011 STI at the last oil change. We'll see how it goes.
Had a Q5 and it was a money pit. Oil Consumption got so bad I was putting in a quart every 400 miles.
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If choosing engine oil across many manufacturers, check the part ranking. If your choice is down to two brands, the PartReview part comparisons help.
We compare engine oil across these categories:
In March 2026 on PartReview, engine oil RED LINE were overall better than OEM Audi.
In March 2026 on PartReview, engine oil RED LINE were overall more popular than OEM Audi.
By vote balance, engine oil RED LINE surpassed OEM Audi:
By number of reviews, engine oil RED LINE surpassed OEM Audi:
In March 2026, according to PartReview, engine oil RED LINE led more car-specific ratings than OEM Audi:
RED LINE are chosen by owners of cars such as: Audi S3, and others.
Engine oil OEM Audi have not yet taken leading positions in car-specific ratings. You can help by adding a review and specifying your car.
If this comparison didn’t fully answer your question, there are many others on PartReview.
For example, comparisons of engine oil RED LINE with: Mobil, Castrol, LIQUI MOLY, MOTUL, Shell, AMSOIL, VALVOLINE, PENNZOIL, OEM Toyota, Mannol.
Also available: comparisons of engine oil OEM Audi with: Mobil, Castrol, LIQUI MOLY, MOTUL, Shell, AMSOIL, VALVOLINE, PENNZOIL, OEM Toyota, Mannol.
You can also see who is better among other engine oil manufacturers: Mobil or Castrol, Mobil or LIQUI MOLY, Mobil or MOTUL, Mobil or Shell, LIQUI MOLY or Castrol.
