gas
07-22-2012, 10:05 PM
#7
Team Owner
2010 owner's manual, page 6-7.
Gasoline Octane
If the vehicle has the 6.2L V8 engine (VIN Code W), use
premium unleaded gasoline with a posted octane rating
of 91 or higher. You can also use regular unleaded
gasoline rated at 87 octane or higher, but the vehicle's
acceleration could be slightly reduced, and a slight
audible knocking noise, commonly referred to as spark
knock, might be heard. If the octane is less than 87,
a heavy knocking noise might be heard when driving.
If this occurs, use a gasoline rated at 87 octane or
higher as soon as possible. Otherwise, you could
damage the engine. If heavy knocking is heard when
using gasoline rated at 87 octane or higher, the engine
needs service.
If the vehicle has the 6.2L V8 engine (VIN Code T)
or the 7.0L V8 engine (VIN Code E), use premium
unleaded gasoline with a posted octane rating of 91
or higher. For best performance, use premium unleaded
gasoline with a posted octane rating of 93. In an
emergency, you can use regular unleaded gasoline
with an octane rating of 87 or higher. If 87 octane fuel is
used, do not perform any aggressive driving maneuvers
such as wide open throttle applications. You might also
hear audible spark knock during acceleration. Refill the
tank with premium fuel as soon as possible to avoid
damaging the engine. If heavy knocking is heard when
using gasoline rated at 91 octane or higher, the engine
needs service.
If the vehicle has the 6.2L V8 engine (VIN Code W), use
premium unleaded gasoline with a posted octane rating
of 91 or higher. You can also use regular unleaded
gasoline rated at 87 octane or higher, but the vehicle's
acceleration could be slightly reduced, and a slight
audible knocking noise, commonly referred to as spark
knock, might be heard. If the octane is less than 87,
a heavy knocking noise might be heard when driving.
If this occurs, use a gasoline rated at 87 octane or
higher as soon as possible. Otherwise, you could
damage the engine. If heavy knocking is heard when
using gasoline rated at 87 octane or higher, the engine
needs service.
If the vehicle has the 6.2L V8 engine (VIN Code T)
or the 7.0L V8 engine (VIN Code E), use premium
unleaded gasoline with a posted octane rating of 91
or higher. For best performance, use premium unleaded
gasoline with a posted octane rating of 93. In an
emergency, you can use regular unleaded gasoline
with an octane rating of 87 or higher. If 87 octane fuel is
used, do not perform any aggressive driving maneuvers
such as wide open throttle applications. You might also
hear audible spark knock during acceleration. Refill the
tank with premium fuel as soon as possible to avoid
damaging the engine. If heavy knocking is heard when
using gasoline rated at 91 octane or higher, the engine
needs service.
07-22-2012, 10:07 PM
#8
Le Mans Master
I use Shell V-Power.
You can use regular with no ill effects, but you bought a high performance car so you should put high performance fuel in it. 91 octane works fine.
You can use regular with no ill effects, but you bought a high performance car so you should put high performance fuel in it. 91 octane works fine.
07-22-2012, 10:59 PM
#11
07-22-2012, 11:52 PM
#12
Race Director
Member Since: May 2011
Location: Bayou Country LA
Posts: 15,124
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8 Posts
St. Jude Donor '11-'12-'13-'14-'15-'16-'17
Do the math. You don't save that much on regular where it makes any difference. You paid for the car so do it right and pay for the gas. Also, don't listen to the people that say it must be Chevron or Shell. I checked ARCO (BP) and their detergent additive is nearly as high as the top tier stations.
07-23-2012, 06:56 AM
#16
Race Director
I use top tier gas. Around here it's only Mobil 93. I wish we had Shell V Power because. IMO it's the best. I even have the Shell app.on my phone I use it on road trips to find their stations.
07-23-2012, 07:17 AM
#17
Le Mans Master
Regular won't hurt it but mileage will go down because the ECM will detune the engine reducing both performance and mileage. I find that the decrease in mileage for anything less than 91 octane costs more than paying for premium.
Cheap gas will also leave deposits that would be removed by gas with higher levels of additives. This will cause what many here call "cam lope" but is actually just misfires. Always using premium gas from a Top Tier company as GM recommends will eliminate these issues.
Cheap gas will also leave deposits that would be removed by gas with higher levels of additives. This will cause what many here call "cam lope" but is actually just misfires. Always using premium gas from a Top Tier company as GM recommends will eliminate these issues.
07-23-2012, 09:04 AM
#19
Regular won't hurt it but mileage will go down because the ECM will detune the engine reducing both performance and mileage. I find that the decrease in mileage for anything less than 91 octane costs more than paying for premium.
Cheap gas will also leave deposits that would be removed by gas with higher levels of additives. This will cause what many here call "cam lope" but is actually just misfires. Always using premium gas from a Top Tier company as GM recommends will eliminate these issues.
Cheap gas will also leave deposits that would be removed by gas with higher levels of additives. This will cause what many here call "cam lope" but is actually just misfires. Always using premium gas from a Top Tier company as GM recommends will eliminate these issues.
07-23-2012, 09:07 AM
#20
Shell or ULTRA 94
Our 2005 owner's manual recommends 91 or higher and definitely not the ethanol blended gas. Up here any gas stations that I have checked use 10% ethanol in their low grade, 5% in the middle grade and no ethanol in the premium. I use either Shell or Ultra 94 in everything including our lawn mowers. Keep close track of your gas mileage and you will find that you really are not saving by buying the cheaper grades of gas.