Well, this probably isn't gonna help either being my first post as well, but I've been running purol 10w-40 in my E55 amg the past 2 oil changes. I currently have a pint jar full of the prior oil change, and with my next oil change happening this month, ill grab a pint from it too.
I am not easy on my car, i drive it pretty aggressively, it makes 484whp/526wtq on a dyno dynamics dyno uncorrected. And I go 10k miles/1 year between changes.
Could I have bought into snake oil? It's possible. But given that my understanding is Bisimoto has a phd in chemical engineering, I kinda put faith in his skillset of not selling something without results. I'll follow through with this page on my analysis from Blackstone afterwards, as my engine just crossed over 100 thousand miles.
(idk much about oil analysis and such, but hopefully it'll help fill in the gaps for those skeptical)
