Engine Oil Additives - Chevrolet 1979 Light Duty Truck Owner's Manual

line.
Push the dipstick back down an the way after taking
the reading. Add oil
•
If you check the oil level when the oil is cold, do not run the
engine first. The cold oil will not drain back to the pan fast
enough to give a true oil level.

Engine Oil Additives

There are many extra engine oil helpers or additives for sale. Your
engine should not need these extra additives if you use SE-quality
engine oil and change it as suggested. If you think your engine has an
oil related problem, talk to your authorized dealer. If needed, your
dealer can provide you with a tested and approved oil additive called
"GM
Engine Oil Supplement. "
TRANSMISSION ITEMS
A U TO M ATIC TRANSMISSION F L U I D
R ECOM M E N DATI ONS
Use the Proper Fluid
Use only automatic transmission fluid labeled DEXRON® II. You
can buy this fl u id .from your dealer or other service outlets.
Check the Fluid Level with Care
Check the automatic transmission fluid level at each engine oil change.
Before checking the fluid level, set the parking brake and then start
the engine. Apply the regular brakes and then move the shift lever
through all of the gear ranges, ending in "Park." You must check the
fluid level with the engine running at slow idle and the vehicle level.
NOTICE: You cannot read the correct fluid level if you have just driven
the vehicle for a long time at high speed, in city traffic in hot weather,
or if the vehicle has been pulling a trailer. Wait until the fluid has cooled
down (about 30 minutes).
Remove the dipstick located on the passenger side of the engine block.
Carefully touch the wet end of the dipstick to find out if the fluid is
cool, warm or hot. Wipe it clean and push it back in until the cap seats.
Pull out the dipstick and read the fluid level.
•
If it felt cool (about room temperature), the level should be
1/8 to 3/8 inch (3 to lO millimetres) below the "Add" mark.
The dipstick has two dimples below the "Add" mark to show
this range.
•
If it felt warm, the level should be close to the "Add" mark
(either above or below).
•
If it was too hot to hold, the level should be at the "Full"
mark.
if
needed.
COOL
WARM
5-S
FULL HOT