Originally Posted by Spdfrk1990
I bought some mobil 1 0w-40 to mix with the 5w30 next time. According to M1 the 0w40 is designed to work well with newer DIT engines. Copied this from their website.
Applications
Thanks to extensive cooperative development work with major manufacturers and the application of the latest lubrication technology, Mobil 1 0W-40 is recommended for many types of modern vehicles where it will help provide unsurpassed performance even under very demanding driving conditions.
Latest engine technologies including Turbo-chargers, Direct Injection, Diesels (without DPF) and Hybrids
High performance engines
Most operating conditions, from mild to extreme
This is only marketing.
In reality, M1 FS 0W-40 has high calcium (> 2,500 ppm) and no magnesium; therefore, it can't have SN PLUS. Also, 1.34% sulfated ash is really high. In addition to not having LSPI protection, this is definitely a high-SAPS/full-SAPS oil.
It's not really suitable for GDI engines.