Buick Envista 2025 - Filling the Tank; Fuel Additives; Fuels in Foreign Countries; Prohibited Fuels

Buick Envista Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-18181221) - 2025
182 Driving and Operating
Do not use any fuel labeled E85 or FlexFuel.
D
o not use gasoline with ethanol levels greater
than 15% by volume.
Prohibited Fuels
Caution
Do not use fuels with any of the following
c
onditions; 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.
(Continued)
Caution (Continued)
•
F
uel 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.
Fuels in Foreign Countries
T
he 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
3182.
Fuel Additives
TOP TIER Detergent Gasoline is highly
recommended for use with your vehicle. If
your country does not have TOP TIER Detergent
Gasoline, add ACDelco Fuel System Treatment
Plus – Gasoline to the vehicle’s gasoline
fuel tank at every oil change or 15 000 km
(9,000 mi), whichever occurs first. TOP TIER
Detergent Gasoline and ACDelco Fuel System
Treatment Plus – Gasoline will help keep
your vehicle’s engine fuel deposit free and
performing optimally.
Filling the Tank
A
n arrow on the fuel gauge indicates which side
of the vehicle the fuel door is on. See Fuel Gauge
385.
{ W
arning
Fuel v
apors and fuel fires burn violently and
can cause injury or death.
Follow these guidelines to help avoid
injuries to you and others:
•
Read and follow all the instructions on
the fuel pump island.
•
Turn off the engine when refueling.
•
Keep sparks, flames, and smoking
materials away from fuel.
•
Do not leave the fuel pump unattended.
•
Avoid using electronic devices
while refueling.
•
Do not re-enter the vehicle while
pumping fuel.
•
Keep children away from the fuel pump
and never let children pump fuel.
(Continued)