Precaution For Fuel (Unleaded Regular Gasoline Recommended); Engine Coolant Recommendation - GMC CHEVROLET CITY EXPRESS CARGO VAN 2015 Builder Manual

2015-18 CHEVROLET CITY EXPRESS CARGO VAN BODY BUILDER MANUAL

Precaution for Fuel (Unleaded Regular Gasoline Recommended)

Use unleaded regular gasoline with an octane rating of at least 87 AKI (Anti-Knock Index) number (Research Octane
number 91).
CAUTION:
Do not use leaded gasoline. Using leaded gasoline will damage the three-way catalyst Do not use E-85 fuel (85% fuel
ethanol, 15% unleaded gasoline) unless the vehicle is specifically designed for E-85 fuel (i.e., Flexible Fuel Vehicle —
FFV Models). Using a fuel other than that specified could adversely affect the emission control devices and systems,
and could also affect the warranty coverage validity.
Engine Oil Recommendation
General Motors recommends the use of a resource conserving oil in order to improve fuel economy. Select only engine
oils that meet the American Petroleum Institute (API) certification and International Lubricant Standardization and
Approval Committee (ILSAC) certification and SAE viscosity standard. These oils have the API certification mark on the
front of the container. Oils which do not have the specified quality label should not be used as they could cause engine
damage.

Engine Coolant Recommendation

The engine cooling system is filled at the factory with a pre-diluted mixture of 50% Genuine OEM Long Life
Antifreeze/Coolant (blue) and 50% water to provide year round antifreeze and coolant protection. The antifreeze
solution contains rust and corrosion inhibitors. Additional cooling system additives are not necessary.
WARNING:
•
Never remove the radiator or coolant reservoir cap when the engine is hot. Wait until the engine and radiator
cool down. Serious burns could be caused by high pressure fluid escaping from the radiator.
•
The radiator is equipped with a pressure type radiator cap. To prevent engine damage, use only a Genuine
OEM radiator cap.
CAUTION:
•
When adding or replacing coolant, be sure to use only OEM Long Life Antifreeze/ Coolant (blue) or equivalent.
Genuine OEM Long Life Antifreeze/Coolant (blue) is pre-diluted to provide antifreeze protection to
-34° F (-37° C).
•
If additional freeze protection is needed due to weather where the vehicle is operated, add OEM long life
Antifreeze/Coolant (blue) concentrate following the directions on the container. If an equivalent coolant other
than OEM Long Life Antifreeze/Coolant (blue) is used, follow the coolant manufacturer's instructions to
maintain minimum antifreeze protection to -34° F (-37° C). The use of other types of coolant solutions other
than OEM Long Life Antifreeze/Coolant (blue) or equivalent may damage the engine cooling system.
•
Mixing any other type of coolant other than OEM Long Life Antifreeze/Coolant (blue), including The OEM Long
Life Antifreeze/Coolant (green), or the use of non-distilled water will reduce the life expectancy of the factory
filled coolant.
API certification mark API service symbol
Pa g e | 127