It's quality oil...it's just quite thick at operating temps (obviously). Have you used similarly thick oils in that engine recently? If so, and you can't find anything else you like better, try it. I went looking for the new M1 5W-40 Turbo Diesel oil at Wal-Mart and Advanced Autoparts and they didn't have it. That should be a real winner just like M1 5W-40 T&SUV was.
I am using Syntec 5W-40 now and it seems to have sheared considerably (viscosity loss) in my 1.8T by 4000 miles into the interval. So I wouldn't recommend it for engines that prefer oils that remain 40 weights during the entire interval. It seems okay for engines that do well on thick 30 weights though. Might as well use GC over BC because they end up at similar viscosities since BC shears and GC only thickens slightly.