@chris719 told me about this XOM engineer (Haris Junuzovic) that happened to visit the Porsche Club of Hamburg for a technical discussion of the X3 0w40. As it turns out, the X3 0w40 is a better oil than the FS 0w40. I would say Super Car 0w40 is too.
Noack for X3 0w40 is 8.6% FWIW.
Figured I post what was specifically said about the two:
"It's fitting that ExxonMobil, as a long-standing Porsche development partner, also offers special high-performance oils for the Mezger engine family, namely the Mobil 1 FS x1 5W-50 and the Mobil 1 FS x3 10W-60 (from the second half of 2020). These revised high-performance oils ensure even better wear protection, very good engine cleanliness and low oil consumption thanks to even better sealing. The focus of the lecture from Mobil 1.
However, developer Haris Junuzovic had the Mobil 1 ESP x3 0W-40 with the new Porsche C40 oil approval, which is approved for use in all current Porsche V8 and boxer engines. The outstanding properties of this new development range from optimized friction behavior to even greater wear protection compared to the already very good predecessor product Mobil 1 FS 0W-40. Especially in the area of connecting rod bearings, high temperatures and speeds place extreme demands on the engine oil. Lower fuel consumption has also been demonstrated in numerous engines compared to 0W-30 oil. The risk of LSPI pre-ignition occurring in some modern turbo engines, which can lead to major engine damage within a very short period of time, is eliminated by specially tailored additives. The same applies to the protection of petrol and diesel particulate filters. Maximum aging stability, even when using low-quality fuels, enables extended oil change intervals of up to 30,000 km. The result of ExxonMobil's research and development efforts is a high-tech product that combines outstanding technical properties with fuel saving potential. New and performance-enhanced air-cooled 'Wicked Sixes' are supplied with appropriate high-performance oils in a species-appropriate manner. PC Hamburg would like to thank you for this exclusive specialist lecture."
www.porsche-club-hamburg.de
Noack for X3 0w40 is 8.6% FWIW.
Figured I post what was specifically said about the two:
"It's fitting that ExxonMobil, as a long-standing Porsche development partner, also offers special high-performance oils for the Mezger engine family, namely the Mobil 1 FS x1 5W-50 and the Mobil 1 FS x3 10W-60 (from the second half of 2020). These revised high-performance oils ensure even better wear protection, very good engine cleanliness and low oil consumption thanks to even better sealing. The focus of the lecture from Mobil 1.
However, developer Haris Junuzovic had the Mobil 1 ESP x3 0W-40 with the new Porsche C40 oil approval, which is approved for use in all current Porsche V8 and boxer engines. The outstanding properties of this new development range from optimized friction behavior to even greater wear protection compared to the already very good predecessor product Mobil 1 FS 0W-40. Especially in the area of connecting rod bearings, high temperatures and speeds place extreme demands on the engine oil. Lower fuel consumption has also been demonstrated in numerous engines compared to 0W-30 oil. The risk of LSPI pre-ignition occurring in some modern turbo engines, which can lead to major engine damage within a very short period of time, is eliminated by specially tailored additives. The same applies to the protection of petrol and diesel particulate filters. Maximum aging stability, even when using low-quality fuels, enables extended oil change intervals of up to 30,000 km. The result of ExxonMobil's research and development efforts is a high-tech product that combines outstanding technical properties with fuel saving potential. New and performance-enhanced air-cooled 'Wicked Sixes' are supplied with appropriate high-performance oils in a species-appropriate manner. PC Hamburg would like to thank you for this exclusive specialist lecture."

Technik Talk - 2020 - Berichte - Porsche Club Hamburg e.V.
Text u. Bilder: Dr. Rainer Lademann u. Haris Junuzovic