Chevrolet/GMC Silverado 1500 / Sierra/Sierra Denali 1500 Owner Manual
(GMNA-Localizing-MidEast-16515122) - 2023 - CRC - 8/12/22
Driving and Operating
277
Fuel
Top Tier Fuel
GM recommends the use of TOP TIER
Detergent Gasoline to keep the engine clean,
reduce engine deposits, and maintain
optimal vehicle performance. Look for the
TOP TIER Logo or see www.toptiergas.com
for a list of TOP TIER Detergent Gasoline
marketers and applicable countries.
Recommended Fuel (Except
L87 6.2L Engine)
Use the recommended fuel for proper
vehicle maintenance.
Use unleaded petrol with a posted octane
rating of 91 RON or higher and with ethanol
up to 10% by volume. Otherwise an audible
knocking noise may be heard. If heavy
knocking is heard when using gasoline rated
at 91 RON or higher, the engine needs
service.
Recommended Fuel (L87 6.2L
Engine)
Unleaded petrol with a posted octane rating
of 95 RON or greater and with ethanol up to
10% by volume is recommended.
If unavailable, unleaded petrol rated at 91
RON can be used, but will result in reduced
performance and driveability, and an audible
knocking noise may be heard. Once
available, 95 RON petrol or greater should
continue to be used. If heavy knocking is
heard when using unleaded petrol rated at
95 RON or greater, the engine needs service.
Prohibited Fuels
Caution
Do not use fuels with any of the
following conditions; doing so may
damage the vehicle and void its
warranty:
.
Fuel with any amount of methanol,
methylal, ferrocene, and aniline. These
fuels can corrode metal fuel system
parts or damage plastic and rubber
parts.
(Continued)
