Engine Oil (Diesel Engines) - GMC 1994 Yukon Owner's Manual

Used oil can be a real threat to the environment. If you change your own oil,
be sure to drain all free-flowing oil from the filter before disposal.
Don't
ever
dispose of oil by putting it in the trash, pouring it on the ground, into sewers,
or into streams or bodies of water. Instead, recycle it by taking it to a place
that collects used oil. If you have a problem properly disposing of your used
oil, ask your dealer, a service station or a local recycling center for help.
Engine Oil (Diesel Engines)
It's a good idea to check your engine oil level
every
time you get fuel. In
order to get an accurate reading, the oil must be warm and the vehicle must
be on level ground.
To Check Engine Oil
Turn off the engine
and give the oil a few
minutes to drain back
into the oil pan. If you
don't, the oil dipstick
might not show the
actual level.
Pull out the dipstick and clean it with a paper towel or a cloth, then push it
back in all the way. Remove it again, keeping the tip lower.
6-22
I C .