Rotella is a diesel oil, but works just as well in gasoline engines. Some people say that diesel engine oils harm catalytic converters, but nowadays they don't because of modern diesel emissions equipment. I run rotella in everything, from pushmowers to tractors to our trucks and vans. Aluminum or cast iron blocks, never had any trouble.
2016 Ram 3500HD, DRW, CCLB, 6.7 Cummins, the notorious 68RFE, 4WD, etc, etc.
2005 Nissan 350z