View Poll Results: What Grade Of Fuel Do You Use?
87
300
64.38%
90
55
11.80%
93
107
22.96%
Ethanol
4
0.86%
Voters: 466. You may not vote on this poll
Fuel Grades
Senior Member
Joined: 10-14-2005
Posts: 5,359
From: SoCal
Originally Posted by guido099
87 recommended...87 it gets...stop waisting your money!
For the 2.4L, 91 or higher is recommended:
(from the manual)
Gasoline Octane
If your vehicle has the 2.2L L4 engine (VIN Code F),
use regular unleaded gasoline with a posted octane
rating of 87 or higher. If the octane rating is less than 87,
you may notice an audible knocking noise when you
drive, commonly referred to as spark knock. If this
occurs, use a gasoline rated at 87 octane or higher as
soon as possible. If you are using gasoline rated at
87 octane or higher and you hear heavy knocking,
your engine needs service.
If your vehicle has the 2.4L L4 engine (VIN Code P),
use premium unleaded gasoline with a posted octane
rating of 91 or higher. You may also use regular
unleaded gasoline rated at 87 octane or higher, but
your vehicle’s acceleration may be slightly reduced,
and you may notice a slight audible knocking noise,
commonly referred to as spark knock.
_________________________________
The 2.4L engine's variable valve timing takes full advantage of higher octane fuels. With a good octane booster, the power increase is even more noticeable.
Senior Member
Joined: 01-30-2006
Posts: 112
From: W-S, North Carolina
Originally Posted by SoCalHHR
If you have a 2.2 it is.
For the 2.4L, 91 or higher is recommended:
(from the manual)
Gasoline Octane
If your vehicle has the 2.2L L4 engine (VIN Code F),
use regular unleaded gasoline with a posted octane
rating of 87 or higher. If the octane rating is less than 87,
you may notice an audible knocking noise when you
drive, commonly referred to as spark knock. If this
occurs, use a gasoline rated at 87 octane or higher as
soon as possible. If you are using gasoline rated at
87 octane or higher and you hear heavy knocking,
your engine needs service.
If your vehicle has the 2.4L L4 engine (VIN Code P),
use premium unleaded gasoline with a posted octane
rating of 91 or higher. You may also use regular
unleaded gasoline rated at 87 octane or higher, but
your vehicle’s acceleration may be slightly reduced,
and you may notice a slight audible knocking noise,
commonly referred to as spark knock.
_________________________________
The 2.4L engine's variable valve timing takes full advantage of higher octane fuels. With a good octane booster, the power increase is even more noticeable.
For the 2.4L, 91 or higher is recommended:
(from the manual)
Gasoline Octane
If your vehicle has the 2.2L L4 engine (VIN Code F),
use regular unleaded gasoline with a posted octane
rating of 87 or higher. If the octane rating is less than 87,
you may notice an audible knocking noise when you
drive, commonly referred to as spark knock. If this
occurs, use a gasoline rated at 87 octane or higher as
soon as possible. If you are using gasoline rated at
87 octane or higher and you hear heavy knocking,
your engine needs service.
If your vehicle has the 2.4L L4 engine (VIN Code P),
use premium unleaded gasoline with a posted octane
rating of 91 or higher. You may also use regular
unleaded gasoline rated at 87 octane or higher, but
your vehicle’s acceleration may be slightly reduced,
and you may notice a slight audible knocking noise,
commonly referred to as spark knock.
_________________________________
The 2.4L engine's variable valve timing takes full advantage of higher octane fuels. With a good octane booster, the power increase is even more noticeable.
Thanks Mike your Quick and/or have a lot of free time
Senior Member
Joined: 12-28-2005
Posts: 2,531
From: Worcester County, MA
Now, I bet the Captain can point out a thread but I'm gonna ask anyway....I know that ethanol is bad news unless your engine is specifially designed for it, but what about 10% ethanol? It seems all of the stations around here have changed to it. Will we (2.2 and 2.4 owners alike) suffer any damage from this? 
