I've used AMSOIL since 1977....in everything from to name a few, my 83 GTi, 88 Scirocco, 04 R32 and now the wife's 06 Passat 3.6L as well as my 04 Volvo S60R and have never had an issue. I use the 5w40 in the Passat and 0w30 in my Volvo.
That is my personal favorite so far. Use or burn less than anything else I have tried, and I swear the engine sounds quieter. Previously used Castrol, Amsoil, Mobil 1.
I have used Amsoil's 5w-50 on my mk4 GTI 1.8T and my Passat from their first oil changes until now. I love the oil and use it exclusively.
I was recently obsessed with oil in my 01 1.8T. I was at http://www.bobistheoilguy.com alot and determined that Valvoline Synpower 5w40 was the way to go based on oil analysis and availability. Castrol Syntec 5w40 appeared to degrade faster and the viscosity wasn't near as good as the Sypower after only 3k miles on it. IMHO Synpower outperforms Syntec in our motors based on actual facts and numbers from the oil analysis.
oil consumption is way down since i've been using 300v.. and the smell isn't bubble gum.. it's burnt popcorn
Been running 300V in all my cars including my GTI Best oil ever IMHO You'll notice a power difference when you switch form Castrol to 300V
it was really good. no oil consumption problems and car just felt a niice smooth power delivery the whole time i had the motul running. I also had minimal wear on my cam follower which is a big prob for people with upgraded fuel pumps on fsi's, although i have no idea if this could be related.
Pentosin High Performance is the right one to use. 5w-40 Pento High Performance 5W-40 is an especially formulated fuel economy engine oil. It is based on synthetic base oils only, the most modern and best engine oil additives currently available and a very shear stable VI - Improver. The combination of these exquisite components guarantees an excellent engine performance under the most severe driving conditions. Pento High Performance 5W-40 is ideally suited as an all season engine oil. Pento High Performance 5W-40 contains a special combination of very efficient fric-tion modifiers which cause the engine to run very smoothly. Even more important, it causes fuel savings in a recognizable way.
I would stick with oils like PENTOSIN/LUBRO-MOLY/CASTROL GERMAN/MOTUL/ This one is easy. Anything not made in the US and is 100% synthetic. I use Pentosin high performance 5w-40, 502/501/500 approved oil.
When I tried Amsoil in my 16v for the first time, oil temps were 10 degrees cooler on my MFA. I have Mobil 1 in now and my oil temps are back up 10 degrees higher.
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