I have a modified 335i with a custom tune, aftermarket intercooler, intake, and methanol injection kit. It produces about 380hp at the wheel. I've been using GC 0w-30 without issues, but the tune and mods are new this winter. I occasionally push the car to its limits. I'm planning on trying motul 8100 xcess or redline 5-40. I'm really impressed by their pds and uoa stats. Any other robust LL01 oils I should consider? I'm thinking a thicker oil, for the summer with a higher hths would work well. Are there any special considerations with a modified n55 and a meth kit? The oil temperatures are usually right at 250 in the summer. It doesn't burn any appreciable amount of oil, I've only added one half quart ever. Any advice or pointed guidance is much appreciated- you oil gurus know who you are! Thanks in advance.