Thank you, pizzaguy for detailed explanation. I think about Motul 8100 X-max 0W40 according to M-B 229.5 (not M-B 229.3 - my mistake). You have a right that M-B 229.3 not listed that type of Motul oil. My choose of the Motul oil is based on opinions of other X'fires Users.

For over 10 years I used Mobil 1 Rally Formula 5W50 in my Volvo's and Saab's turbocharged engines with good results. Engines always were absolutely clean inside.
But I used my Volvo and Saab cars very heavily with fast accelerations and braking. Now I am a bit afraid to use 5W50 oil in my X'fire: MY2005 (sold by dealer /used first time in 2007) and millage is 112500 miles. Fortunately, I have not any leaks of oil from engines and gear box.

I live in Central Europe near Baltic See shore so winter temperature are not low: 34F and higher and above 77F in summer. Current oil Shell Helix Ultra 1 5W40 seems to be appropriate: idle of engine is 685 rpm (187F coolant temp and 129F intake air temp).

According to your suggestions and information I will probably purchase Motul 8100 X-cess 5W40 (and new Mann HU718/5x filter, of course).