Chevrolet Low Cab Forward 6.7L Diesel Engine 6500XD (GMNA-Localizing-
U.S.-15749874) - 2022 - CRC - 12/2/21
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Vehicle Care
Engine Oil Additives
Engine oils contain a variety of additives.
Your engine should not need any extra
additives if you use the recommended oil
quality and change intervals.
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Warning
Used engine oil contains harmful
contaminants that have caused skin
cancer in laboratory animals. Avoid
prolonged skin contact. Clean skin and
nails thoroughly using soap and water
–
not mineral oil, fuels or solvents. Launder
or discard clothing, shoes or rags
containing used engine oil.
Engine Oil Viscosity Chart
Select appropriate engine oil in accordance
with the table below. It is also important to
select the viscosity appropriate for the
temperature at which your vehicle operates.
Use the following table for making correct
selections.
Engine oil viscosity (thickness) has an effect
on fuel economy and cold-weather starting.
Lower viscosity engine oils can provide
better fuel economy; however, higher
temperature weather conditions require
higher viscosity engine oils for satisfactory
lubrication.
When choosing an oil, consider the range of
temperature your vehicle will be operated in
before the next oil change. Then, select the
recommended oil viscosity from the chart.
Do not use any viscosity of oil not
recommended. Such oils could cause engine
damage.
