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First of all, I'm in Finland, so I don't know that is the formula here in Europe different from the U.S. products. Oil will be going into a 2008 Chevy Suburban 6.0 90k miles. Almost only low rpm highway driving. I would like to try either one of these oils. From the European site, I can only...

I know that this subject has been beaten to death over the internet, but still leaves me confused with no definitive answers. Only things that I know for sure, are the factory minimum specs, and the old rule of thumb 10psi per 1000rpm. Since I have a great trust for the knowledge that the folks...

Ok guys, I was going for Redline D6 first but they're out of stock here. So my options for 6L90E calling Dexron VI fluid are these three. Which one should I go for? I'm running now the Mag1, no major complaints about that. Only sometimes 3-4 shift throws the rpm's high. Since I live in Finland...

So my transmission calls for Dexron VI. I saw a great deal locally on the Redline D6. I have previously used MAG1 and no complaints about that. That should be GM licensed and approved too. Redline apparently is not. Read about the Redline fluid here, people seem to like it. Should I go for it...

Which way would you go and why? Use Amsoil Signature series 5w-30 and change it once a year, or use Mobil1 ESP 5w-30 and change it twice a year. In a 2008 6.0 Vortec with about 90k.