Unfortunately, now that I'm on vacation I've been overthinking oil again and I couldn't resist making another "choose my oil" post to see if there's any relevant information I've missed.
This time, it's between Mobil 1 0W40 FS and Pennzoil Platinum Euro 5W40. (I know there's a 5W40 version of the M1 and vice versa which would make for a more relevant comparison, but these two happen to be readily available near me at similar prices.)
From what I can gather, the most notable differences are:
- Different base stocks
- M1: 30-40% PAO + 40-50% group 3 base stocks (per the recent SDS found in Overkill's post)
- PPE: 80-90% GTL (based on Feb. 2021 SDS which is the most recent I could find on Shell's website)
- Detergent (?) additives
- M1: predominantly Ca, ~3500ppm in VOA of what I assume is the previous GTL-based SN formulation
- PPE: far less Ca (~1400ppm) but with Mg (~1100ppm), both figures quoted from VOA for SP formulation
- Pour point
These oils will be used in BMW M62 year round (winter temps down to -20°C). This is a naturally aspirated, port injected engine which only sees regular street use, so I'm more fo