is smoother and sounds and feels fine running higher rpm, i think it will still benefit in fuel economy and longivity by running a lower rpm.

the 560 sel rear end may have posi on at least some of them. i am not sure why i think this. my mb buyers guide doesnt mention it.

tom w

__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.