I don't care much about winter performance as it doesn't get super cold here. I decided to try the X-cess as it has good viscosity at 100C, a Noack rating just below 10% and a high VI. In the end, I decided my prior experience of very little oil consumption with the Motul pushed me back in their direction after looking at a host of options from Pennzoil, Castrol (OEM), Mobil 1, Redline, etc.pouring over all their specs and taking price into consideration. I'm not sure if the 8100 falls into that category but from what I understand, it's a higher 'grade' than even the Specific. I also read about Motul loosing a lawsuit in Europe recently as some of their formulations were using group III oils and not true group IV synthetics. I did a ton of research and spent quite a bit of time on the 'Bob the oil guy' web page until acronyms made my head explode and left me with a less clear path to well, clarity. I decided to switch back to Motul, this time the X-cess 8100 5w40. With Motul, I'd had virtually zero oil consumption with the exact same driving habits.

Car ran fine, engine was just as quiet overall but my oil consumption went from zero to about 1 liter in 5,000 miles. My last oil change I decided to make a switch to Liqui-Moly, specifically the 4100 Top Tech 5w40. I've used Motul since day one of ownership of my RS5 and had been using the Specific 502 00 5w-40 and the X-Clean 5w-40.

Motul xcess vs xclean wrx