How are you checking your speed and miles traveled? If you're actually doing 50 when your speedometer shows 45 then you're actually travelling 11% more miles than your odometer shows. That's not going to be a big difference but every little bit helps.
'64 swb stepside (gone) '57 1 ton '53 phone truck '59 swb '46 1 1/2 ton '68 swb gmc
