it works on my 350sdl. and it is a feature that i very much appreciate. i can imagine siturations in which it might not be a benefit, such as pointed out above when on a sunny day it is hotter inside than out. in that case i open the windows for a few minutes while i sstart driving to flush out the hot air.

i also use it on the highway when i come up behind an old van or pickup to avoid breathing the increased smelly polluted exhaust. or at a light when one is in front or beside me. works like a charm.

tom w

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[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.