At the push of a button, this versatile tool changes from vacuum to
pressure for evacuating or dispensing fluids. This functionality makes
it ideal for draining tanks or reservoirs then pumping the used fluid
back out for easy disposal. Multiple units work great, simply evacuate
used fluids with one unit, and then quickly refill with new fluid from
a second. For superior mobility, the 7201 utilizes a manual pump, so
compressed air or electricity is not required. Accessories are included
for draining engine oil or transmission fluid directly through the
dipstick tubes.