Engine oil MOTUL or OEM Audi
Motul 5100 because it makes the gearshift feel nice.
I have only used Motul oil in my car since it’s first oil change. Motul 5w-30 in mine as it’s boosted and only driven in the summer.
I’d just stick with Motul, typically you pay for what you get.
Motul 7100 is good but quite expensive. I had good experiences with it. Not sure if its just me but it seemed like it holds heat better? My temp gauge always seems to hold steady at three bars when not stopping and my N400 feels smoother for shift changes.
I don’t drive my car enough to hit any of the reasonable mileage points. I change my oil yearly, roughly around the time it gets inspected. Might be overkill (last year the car moved 2k miles, the year before was 2.4k), but I figure the $80-85 I pay is worth it. My wife’s Q7 will be getting its oil changed every 5k miles. It’s a 3.0T supercharged and they love to eat oil, I’d probably add half the oil back just to make it to 10k.
I do every 5k (2013 S4)
Over here in Germany changing your oil every 3k miles in a normal A4 absolutely tanks your resale value. The only reason to do this frequent oil changes is to hide problems. Personally my car did 30 000km(~20k miles) until 91 000km and then every 15 000km(~10k miles). It's a diesel and almost all longish distance highway trips.
I do 5k/3 months. 3 months usually comes first.
In Canada Audi recommends oil changes ever 15,000km. I always do 10-12,000km because I do city driving. My buddy did every 25,000km on his Mercedes Benz and the thing lasted to 400,000km.
I do have slight oil loss but I also track my car several times a year so it's to be expected. Recently switched to 5w-40 motul so we'll see how that does.
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