GMC Terrain: Fuel / Prohibited Fuels (Gasoline)
Caution
Do not use fuels with any of the following conditions; doing so may damage the vehicle and void its warranty:
- For vehicles that are not FlexFuel, fuel labeled greater than 15% ethanol by volume, such as mid-level ethanol blends (16–50% ethanol), E85, or FlexFuel.
- Fuel with any amount of methanol, methylal, ferrocene, and aniline. These fuels can corrode metal fuel system parts or damage plastic and rubber parts.
- Fuel containing metals such as methylcyclopentadienyl manganese tricarbonyl (MMT), which can damage the emissions control system and spark plugs.
- Fuel with a posted octane rating of less than the recommended fuel. Using this fuel will lower fuel economy and performance, and may decrease the life of the emissions catalyst.
Recommended Fuel (LYX - 1.5L L4 Turbo Engine, LTG - 2.0L L4 Turbo Engine)
LYX - 1.5L L4 Turbo Engine
Do not use any fuel labeled E85 or
FlexFuel. Do not use gasoline with
ethanol levels greater than 15% by
volume.
Use regular unleaded gasoline
meeting ASTM specification D4814
with a posted octane rating of 87 or
higher...
Fuels in Foreign Countries
The U.S., Canada, and Mexico post
fuel octane ratings in anti-knock
index (AKI). For fuel not to use in a
foreign country, see Prohibited
Fuels (Gasoline)...
Other information:
GMC Terrain 2018-2021 Owners Manual: Passenger Airbag Status Indicator
The vehicle has a passenger sensing system. See Passenger Sensing System for important safety information. The overhead console has a passenger airbag status indicator. When the vehicle is started, the passenger airbag status indicator will light ON and OFF for several seconds as a system check...
GMC Terrain 2018-2021 Owners Manual: Off-Road Recovery
The vehicle's right wheels can drop off the edge of a road onto the shoulder while driving. Follow these tips: Ease off the accelerator and then, if there is nothing in the way, steer the vehicle so that it straddles the edge of the pavement...
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