I recently purchased a 2000 Ram 1500 4X4.  I have a few questions about it
if the group could answer please..
It has a bit of aftermarket stuff put on it including bigger tires than
stock (315/75R16).   It appears as though the previous owner didn't have the
speedo recalibrated because at freeway speeds, I'm going 12-15 mph faster
than what the speedo says.  First question - is there any way to recalibrate
it without spending the $400 for a hypertech (or similar) device which I'll
basically only use that once because I don't trailer at all?   Second, the
speedo being off would also throw off the odometer, would it not?
Secondly, I think the transfer case is leaking fluid.  It's got the 231D.
Is there a quick fix for this or where is a good place to get a replacement?

Thanks for any help,
Socalstaff