I run Motul 8100 X-Clean Gen2 5w-40, ACEA C3 API SN oil with a pour point of -44F/42C. in Minnesota winters. But then again I wont drive off in winter or summer till my water temp is to up to 90F/32C. I want some sort of piston expansion before throwing any form of boost at my very short pistons. I don't have a worry at all about my timing chain with this oil as I change it at a 3,500 mile mark because of it's a Hyundai and hard on oil and I am a short tripper with a tune.
MOTUL 8100 X-CLEAN GEN2 5W-40 - Motul
BMW LL-04, MERCEDES-BENZ MB-Approval 229.52, MERCEDES-BENZ MB-Approval 226.5, PORSCHE C40, RENAULT RN0710 - RN0700, VW 511 00
Porsche A40 oils cover 1984 and newer sports car models, but with the newest vehicles, the C40, C30, and C20 standards have been introduced. Most notably, these new "C" specification oils provide protection against LSPI, or low speed pre-ignition, and protect emissions control devices. The C30 and C20 standards are provided for shared VAG platform engines that call for 30 and 20-weight oils, with thinner oils used primarily for improved fuel economy.
My Hyundai's small displacement turbo motor is the poster child for LSPI, with 17 psi at 1,400 rpm. In fact I had what I feel is an LSPI event when new and somehow made it through it still living to this day with even more HP. The car seemed to jump 5 ft off the ground. I thought right there and then the motor was toast, but it was still ran. After that it got mid grade gas and LSPI oil, and now has to have 93 octane.