Rotella is a high quality Shell Oil product which is a positive.
It is actually blended for diesel engines so it contains additional additives for addressing the unique combustion byproducts prodused by diesels like soot and other byproducts that clean dirtier running diesel engines.
It used to have higher levels of ZDDP which is good for flat tappit cams/lifters like what is found in older gas engines. Some say they've cut back on the ZDDP but it supposedly still carries a higher content than modern gasoline engine rated oil.
Since Rotella is popular in the OTR trucking industry and Ag industry Shell sells huge amounts of it which helps to keep it's price down. It is a higher quality oil than many popular brands of std gasoline rated oils and costs much less.
I don't know of any negatives to running a diesel rated oil in a gasoline engine but when one discusses an engine oil topic you can expect a myriad of differing opinions LOL.
