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I run AWD.. with a 3 main boxer. 90hp.
3 modes to transmission..
4wd hi == lsd rear,
4wd lo == full diff lock, and reduction
2wd == open front, no rear.
no difference at all bewteen 4hi and 2wd in gas consumption.
could stay there all day...in maine, I have many days.
there is even a momentum, after speed achieved..and no difference in throttle getting to a speed...but once at speed, it seems as though, I am even less toes on the throttle..a momentum is happening in the 4wd. I did learn this similar drivetrain from an inline four, and it was not the same.
But inline fours are notorious for completely dying to the word called "work", there is no torque, until it gets over itself. the boxer is just simply there at all times...every single last rpm...all the way to bogging like a diesel, and still keeps going.
vw AWD synchro van, and old subarus...similar results.
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