It took me many years to come to this conclusion. I run whatever brand of oil the dealer I bought the vehicle from recommends, whether motorcycles or cars.
I have the dealer to do all my maintenance, including change the oil. And I use their filter. I am more than capable of doing my own maintenance. However, I also can afford for the dealer to do it for me. Crap, I even let them change the wiper blades!!! So I let them screw me. But it puts the liability on them.
Had a water pump go out at 42K miles on my Jeep Rubicon, just out of warranty. Dealer pulled the pump and started running on my ass about how corroded it was. Interestingy enough, they had flushed the engine and radiator and changed the antifreeze out at 36K miles. They ate the bill.
Same with brakes on my Honda CRV. Master cylinder went out just months after they had "flushed" the brake lines. They at the bill.
Clutch went out on my Suzuki Hayabusa (still in warranty). Shop manager was asking what kind of oil I used to tear the plates up. Told him I had no frigging idea as he had done 100% of the maintenance work and obviously used a crappy oil, if that's what caused the problem. New clutch at no cost.
VW replaced a motor in my 2001 Jetta VR6 when it was 40000 miles out of warranty. Same scenario. All of the maintenance was done by them, at their recommended schedule, etc. (this one took a little time to pull off_