could try to make a new dipstick
put the truck on a flat surface, drain oil, pour in exactly 4 quarts (1 quart low)
pull out your new home made dipstick, and stamp the low oil mark
add the last quart to the engine, insert dipstick to find and stamp the full oil mark
if you don't like how your first attempt worked out, you can make a second one with the measurements
the second one usually looks much better because of practice
-stan
