Now I wouldn't call myself an expert by any means but I've been the owner of numerous other 4x4s (jeeps, fords, suzuki, land rover) and in some instances off road i feel the high range wheel speed to be better than the low range pull. If it's harmful to the vehicle to use the tod in this manner wouldn't we hear of more problems with it? I surely don't want to have to put it in low every time i might have some wheel slip off road. I want all options possible. Maybe I'm confusing myself. As far as a SAS goes it would seem to me the biggest hurdle would be the tod system. Off subject a bit i suppose.