What octane you guys putting in your mustangs?
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What octane you guys putting in your mustangs?
Newb here) i got a 2010 GT not to long ago and I was reading the owners manual about putting 89 (I think) or higher. So ever since I got the car I have been using super. So I was wondering what are you guys using?
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I use only BP Ultimate (93) in my car.
Unless its really hot at the track where I mix the 93 with 100 race gas to combat knocking
75% 93 oct
25% 100 oct
Unless its really hot at the track where I mix the 93 with 100 race gas to combat knocking
75% 93 oct
25% 100 oct
#6
Since you have a 2010 and thus the 4.6L v8 you don't need the higher octane fuel. I do believe that all 2010's have the adaptive programming the previous bullit's had, so you're not damaging anything by running the higher octane. It's certainly not necessary unless you are hearing ping.
If the owners manual states to run 89, that's what I would run. Unless it's tuned for higher octane you're just wasting money.
If the owners manual states to run 89, that's what I would run. Unless it's tuned for higher octane you're just wasting money.
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Since you have a 2010 and thus the 4.6L v8 you don't need the higher octane fuel. I do believe that all 2010's have the adaptive programming the previous bullit's had, so you're not damaging anything by running the higher octane. It's certainly not necessary unless you are hearing ping.
If the owners manual states to run 89, that's what I would run. Unless it's tuned for higher octane you're just wasting money.
If the owners manual states to run 89, that's what I would run. Unless it's tuned for higher octane you're just wasting money.
Also, you wouldn't damage your engine by running higher octane than recommended but you could by running lower than recommended.
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I think you have things a bit mixed up here. The adaptative tuning means that using higher octane does give you more power so you're not wasting money like you would on a car tuned for 87 w/o adaptative tuning.
Also, you wouldn't damage your engine by running higher octane than recommended but you could by running lower than recommended.
Also, you wouldn't damage your engine by running higher octane than recommended but you could by running lower than recommended.
#15
I think you have things a bit mixed up here. The adaptative tuning means that using higher octane does give you more power so you're not wasting money like you would on a car tuned for 87 w/o adaptative tuning.
Also, you wouldn't damage your engine by running higher octane than recommended but you could by running lower than recommended.
Also, you wouldn't damage your engine by running higher octane than recommended but you could by running lower than recommended.
The 4,6L motor was designed around 87 octane fuel. While the adaptive computing can take advantage of fuel grades to an extent, it can only go so far.
There's a reason the 5.0L owners manual does not specify an octane rating, while the 2010 does. In the progression of technology things get better. the Bullit and 2010 2.6L mustangs represented a first start for this tuning process in ford vehicles.
Unless the car has a tune specifically for a higher octane, members with the 4,6L motor should follow the owners guide for octane rating.
In regards to engine damage, using an octane that is too high for an engine can result in an incomplete burn mixture which can create carbon deposits on the top of the pistons and bottom of the valves. These deposits over time can create hot spots in the combustion chamber that with the use of the manufacturer specified octane my cause ping and detonation.
Always run your vehicle for it's intended octane.
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Actually, the 2010/11 owner's manual does specify octane rating. For the V6 it says 87 octane. For the V8 it says 87 octane but that using 91 octane will give better performance (you get 400 HP using 87 octane and 412 HP using 91 octane).
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I use 87 in my 2010 GT for normal daily driving (my 'stang is my DD)
I have tried 93 but couldn't really tell the difference in normal street driving. The 2010 4.6 engine supposedly makes the same max HP regardless of octane (87 minimum) and makes more torque in the lower RPM's on higher octane (probably because it advances the timing). If I was going to the track I would fill up with 93 but for every day driving I think it is a waste of money.
Brand of fuel is a different question -- there are "top tier" fuels that supposedly have higher detergent additive levels that are supposed to be better for the engine . . . I put in a tankfull of "top tier" every half-dozen tanks (give or take a few), and use whatever is cheapest the rest of the time.
I have tried 93 but couldn't really tell the difference in normal street driving. The 2010 4.6 engine supposedly makes the same max HP regardless of octane (87 minimum) and makes more torque in the lower RPM's on higher octane (probably because it advances the timing). If I was going to the track I would fill up with 93 but for every day driving I think it is a waste of money.
Brand of fuel is a different question -- there are "top tier" fuels that supposedly have higher detergent additive levels that are supposed to be better for the engine . . . I put in a tankfull of "top tier" every half-dozen tanks (give or take a few), and use whatever is cheapest the rest of the time.
Last edited by Bert; 1/13/11 at 01:54 PM.
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