I've run T6 5W-40 in my BMW's for a decade.
My 318i made it to 300,000 miles before I sold it (for reasons unrelated to the oil). Engine was pristine and compression within 10% of factory spec when sold. The only other full-synthetic 5W-40's available around me are Delo and occasionally Mobil 1.
I put Mobil 1 in my Runner, but wouldn't hesitate to put Rotella T6 in there if I wanted to. My other car is a BMW 750Li with a (!) 9qt. capacity, so I always have a few half-empty / near-empty jugs of the stuff lying around. I stick to the M1 mostly because Autozone will occasionally have a Mobil 1 Oil + Filter sale.
My 318i made it to 300,000 miles before I sold it (for reasons unrelated to the oil). Engine was pristine and compression within 10% of factory spec when sold. The only other full-synthetic 5W-40's available around me are Delo and occasionally Mobil 1.
I put Mobil 1 in my Runner, but wouldn't hesitate to put Rotella T6 in there if I wanted to. My other car is a BMW 750Li with a (!) 9qt. capacity, so I always have a few half-empty / near-empty jugs of the stuff lying around. I stick to the M1 mostly because Autozone will occasionally have a Mobil 1 Oil + Filter sale.