fuel grades for different engines

[speedfrk]

It is well know that 93 octane fuel makes a huge difference in power in a EB- stock or tuned. It makes quite a bit less difference in a GT. Does fuel grade affect the V-6 engine in stock form or is it designed to run on 87? Anyone have any direct experience or dyno numbers for the V-6- 93 vs 87?

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[jasonstang]

Oh dear lord. Not again.

 

[DetroitGT]

Run 93 an all 3 cars. Gas is cheap, car likes it better. End of story.

 

[Hack]

Run 93 an all 3 cars. Gas is cheap, car likes it better. End of story.

Why not run 100 octane racing fuel?

 

[Fredboy]

Why not run 100 octane racing fuel?

It's not cheap, readily available nor is it safe for catalytic converters if it has lead in it.

 

[wireeater]

More octane, less knock, less stress on the engine, so why not always run 93. I've never understood the whole gas debate between octanes when it's usually only 5-20 cent difference.

OH NO... YOU HAVE TO PAY two more dollars for a tank of better gas!!!!! Better file for bankruptcy.

 

[awmustang]

More octane, less knock, less stress on the engine, so why not always run 93. I've never understood the whole gas debate between octanes when it's usually only 5-20 cent difference.

OH NO... YOU HAVE TO PAY two more dollars for a tank of better gas!!!!! Better file for bankruptcy.

5-20 cent difference?!?!? I wish. Here in Wisconsin 93 has been as high as 90 cents more per gallon. That said I still plan to run 93 in my Mustang, if it ever arrives. (Tomorrow will be a month since it was built and last I heard it hadn't left Flat Rock yet).

 

[millhouse]

More octane, less knock, less stress on the engine, so why not always run 93. I've never understood the whole gas debate between octanes when it's usually only 5-20 cent difference.

OH NO... YOU HAVE TO PAY two more dollars for a tank of better gas!!!!! Better file for bankruptcy.

It's a 40-50 cent difference here my friend. Quite significant. At my local Costco, 87 is going for $1.66/gal while 93 is $2.16. :headbonk:

 

[wireeater]

5-20 cent difference?!?!? I wish. Here in Wisconsin 93 has been as high as 90 cents more per gallon. That said I still plan to run 93 in my Mustang, if it ever arrives. (Tomorrow will be a month since it was built and last I heard it hadn't left Flat Rock yet).

Ya I over exaggerated slightly for effect, but it's not that bad here where I get gas. From Regular/Premium there is usually around a .40¢ - .60¢ difference. Still not enough to make me consider using a lower grade. If you purchased a car that was built the run optimal advertised power using 93, then the cost of gas should never be a concern of yours or you will never enjoy the car if that's what's going to bother you.

 

[wireeater]

It's a 40-50 cent difference here my friend. Quite significant. At my local Costco, 87 is going for $1.66/gal while 93 is $2.16. :headbonk:

That's still nothing... You're paying an extra $5 for a sense of comfort knowing you're running a better fuel and your car is making more power to enjoy. If you even have to debate the cost of fuels for a Mustang, you purchased the wrong car.

 

[jasonstang]

It's a 40-50 cent difference here my friend. Quite significant. At my local Costco, 87 is going for $1.66/gal while 93 is $2.16. :headbonk:

*pays $45k sports car. Not willing to pay extra 6 bucks per tank*
You wear out tires faster than gas. Say you get 300 miles a tank, that's $0.02 extra per mile. Tires cost about $1000 all four mounted and they last 10000 miles, that's $0.1 per mile. So your tires costs 5 times more per mile yet you cheap out on gas.
Speaking of Octane, the Coyote is actually pretty sensitive. I had a quarter of tank gas sitting in 80F heat for 2-3 weeks. It slowly degraded to a lower octane gas and when I went WOT a couple of times, the knock made the engine to cut ignition and coated my exhaust tips with black soot, never happened in 3000 miles.

 

[millhouse]

That's still nothing... You're paying an extra $5 for a sense of comfort knowing you're running a better fuel and your car is making more power to enjoy. If you even have to debate the cost of fuels for a Mustang, you purchased the wrong car.

I drive 18000 miles per year. @ 19 miles/gallon, I'm looking at $473 per year, or an additional $39/month. I won't miss the power. I will miss the $40/month. Can I afford the extra $40/month? Of course I can, that doesn't mean I want to throw it away.

 

[millhouse]

*pays $45k sports car. Not willing to pay extra 6 bucks per tank*
You wear out tires faster than gas. Say you get 300 miles a tank, that's $0.02 extra per mile. Tires cost about $1000 all four mounted and they last 10000 miles, that's $0.1 per mile. So your tires costs 5 times more per mile yet you cheap out on gas.

Indeed. If I had a choice, I would have went with some all season, 40k+ mile tires. I can guarantee you I'll get 20k miles+ on my summer tires though. I don't visit the drag-strip (anymore), don't do burnouts. I'll drive aggressively time to time (traffic permitting).

 

[S550ilver]

...wait wait wait....let me hit PAUSE and go get the popcorn out of the mircowave, I love this episode of MUSTANG6G...This is one where they beat a dead horse....I LOVE THIS ONE!!!!!!

 

[jasonstang]

Indeed. If I had a choice, I would have went with some all season, 40k+ mile tires. I can guarantee you I'll get 20k miles+ on my summer tires though. I don't visit the drag-strip (anymore), don't do burnouts. I'll drive aggressively time to time (traffic permitting).

Then why do you even own a GT.:eyebulge:

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