Which is the best? in engine and power and safety and longevity and other properties?

the key to engine life , ie;200,000 miles. is change the oil at specific times. the best oil today is casterol and mobile one. go talk to an older maybe retired mechanic about oil type vs sludge in the pan on overhaul. I've owned two MB's. a 450se and a 280s. liked them both. the simplest to take care of was a 1930 model A ford...should have kept it. simple to fix, the other was my a 1941 MB jeep. but i built it up from the ground