Engine oil RED LINE or OEM Audi

I have the 6.4 liter Hemi in my Charger, and I switched from Ultra Platinum to Redline. My car uses 0w 40, but nonetheless, I have not seen or felt any difference between the 2. If you are worried about switching, I can assure you that Redline is a very high quality oil.

I am running Redline 0w-30 during the warmer months. It was the most reasonably priced group 5 ester base (with great reviews) that I could find. Oil temps during my last autoX event were down 15 degrees F, compared to a similar day with the factory recommended 0w-20.

My 07 Passat has 236k. I change oil every 5k, cam follower every 70-100k (20k is serious overkill), lots of coil pack changes (like 4 or 5), and that is about it.

Redline 5w-30 with an OEM filter. No issues and smoother start up.

Audi TTS from 2016 and depending on wether im driving comfortable to work in winter it can be 95-98c, pushing it hard in summer it goes up to 107-108c at times.

My S3 seems to be at 222F all summer when commuting, I think it gets near 240F after a good autocross run

Recently started using in my 2002 M3 and the oil runs cooler compared to the "twin power" oem oil i had been using.

Redline 10w30 full synthetic if I know I'm going to beat the piss out of it for the next 5k miles (think autocross or mountain runs), otherwise I use Honda 10w30 full synthetic.

I had the same issue on my 2019 A6 3.0 last year. Two times I had to pop into the dealership to have oil removed (no charge) and the issue was due to dilution and short trips.

So when i changed the car to 10w40 redline I noticed that the car began to knock around 3-4k which it didn't do before and now it seems to slowly get worse.