Engine oil RED LINE or AMSOIL

Never tried Royal Purple but have used Redline a few times before and will continue to use it. Great stuff!

AMSOIL BABY, all the way. 10w30 Turbo oil and filter every 12,500 or 6 months whichever comes first. Out performs all other brands!

I've been using Amsoil on my '02 A4 1.8T. Converted it over as soon as I could b/c that little hamster gets hot during the long summers around here. Car doesn't burn a drop of oil, of coure it has only 29k on it.

Definitly noticed a difference from dino to synth, through research redline seems to be one of the best....so thats what i use

I'm using Amsoil 15w-40 in both of my Diesels with great results.

Wear values perfect ! Looks like Redline is lowering the Moly value some . Your nox is normal but new plugs or wires could help lower the values, Oxd is elevated by cleaning effect of the POE base and lab equipment hates Redline, no problems though. Second change on this oil will drop OXD values. As I said before I have not seen this formulation before but it looks ROCK solid. Good TBN retention.

RED LINE oil.... nothin beats it.. the real racing oil... very expensive.. but you gotta treat ya VR right

Amsoil series 2000 20w50.

I change every 5,000 with Amsoil in my TDI. I like to change oil and keep tabs on everything under the car, so it's worth it to me.