Was watching "Powernation: Detroit Muscle" this morning and...
 

... they made a statement, as if fact, that if you run Rotella HD diesel oil in a gasoline
engine that two of the additives, there for diesel motor longevity, will in fact cause sludge
buildup in aforementioned gasoline engine.
I've not noticed any sludge yet myself. I'm on my third oil change using the Rotella with
one Suzuki HP oil change in the middle.

I use Rotella T on my 87 s-10 to reduce the sludge because the amount of detergents in it