Are you using PREMIUM Fuel?

[YankeeBob]

Define "Good Stuff". I'm not sure why everyone insists on calling high octane "Good Stuff".
Gas purchased from a reputable company should all be "Good Stuff", no matter the octane.
Octane serves a purpose. Octane is increased to slow the burn down. Lower octane fuel is more volatile and combusts at lower temperatures. Since higher compression engines create higher pressures, hence higher temperatures before combustion, higher octane is needed to prevent pre-ignition....pinging, knocking. Running higher octane in an engine that doesn't need it creates a loss of efficiency, because the fuel is combusting slower that it needs to. You may not get a complete burn in a cycle. This reduces gas mileage and hence, costs more. Lower octane in a lower compression engine gets a more efficient burn.

Higher cost, higher octane gas doesn't make it "better". It may make it more compatible for your engine, and perhaps better than lower octane if your engine needs it.

Recap:
Run the lowest octane fuel your engine will run on without pinging. That equals best performance/efficiency.

If you don't believe me, Google it. Or feel free to waste your money.

[trooper113]

Originally Posted by YankeeBob

Define "Good Stuff". I'm not sure why everyone insists on calling high octane "Good Stuff".
Gas purchased from a reputable company should all be "Good Stuff", no matter the octane.
Octane serves a purpose. Octane is increased to slow the burn down. Lower octane fuel is more volatile and combusts at lower temperatures. Since higher compression engines create higher pressures, hence higher temperatures before combustion, higher octane is needed to prevent pre-ignition....pinging, knocking. Running higher octane in an engine that doesn't need it creates a loss of efficiency, because the fuel is combusting slower that it needs to. You may not get a complete burn in a cycle. This reduces gas mileage and hence, costs more. Lower octane in a lower compression engine gets a more efficient burn.

Higher cost, higher octane gas doesn't make it "better". It may make it more compatible for your engine, and perhaps better than lower octane if your engine needs it.

Recap:
Run the lowest octane fuel your engine will run on without pinging. That equals best performance/efficiency.

If you don't believe me, Google it. Or feel free to waste your money.

Yup...exactly. But you're posting to folks who "just know" rather than do research.

[trooper113]

Originally Posted by S-Glider

Just a heads up. I get less pinging in hot weather, now that I have an oil cooler installed. I didn't expect this, but it sure is nice not to hear it anymore.

A cooler engine equals less chance of pinging. Fuel physics.

[bglidin]

Always highest octane available, 91 is it in Ca .Went out of state used 93 octane increased mileage to 50.37 MPG loaded w/Tbags,tent,etc. The bike loved it So yes it is worth it .

[Gunny4Sawx]

Originally Posted by bacon225

...........Just tell me to go sit in the corner and shut up your bothering my boy.

Actually I think it's STFU and nod head

I've run three tanks of 87 in 06 FLHTCU for the first time at sea level and up to 5000' temps were never over 90. At full throttle at altitude I never got any pinging with the 87. Two weeks ago I was getting pinging using 91 when I loaded it up. I don't know if it was the change in octane or if it was the "freshness" of the gas itself

[YankeeBob]

FWIW, I buy Sunoco. USA gas. Our local Sunoco stations don't use ethanol either.
I have a high compression engine (10.7-1). I have it tuned to run on 91 even though I can get 93 here. When I travel, I might not be able to get 93. It cost me a few ponies having it tuned for 91. But, I can sleep well knowing I can get gas anywhere.

[frydaddy96]

Does anyone know of a web site that shows how much gas of the different grades a company sells in different cities?
Rode from OKC to P'cola yesterday, running 89 oct., got anywhere from 35 to 40 mpg. The worst mileage was with the stinkin' ethanol. From personal experience mpg has more to do with how much your on the throttle, speed, and what you have out in the wind(feet out on pegs, lowers, etc) and headwind. I got better mileage through the lower half of LA with feet on the boards and doing 65-75 in traffic than in the upper half with feet out on the pegs and doing about 73(just because).
My Heritage runs 87 oct. and gets 35-38 depending on how easy I am on throttle, but take it to Colorado and it gets mid 40's to 50 mpg in the mountains.

[bacon225]

Originally Posted by Gunny4Sawx

Actually I think it's STFU and nod head

I've run three tanks of 87 in 06 FLHTCU for the first time at sea level and up to 5000' temps were never over 90. At full throttle at altitude I never got any pinging with the 87. Two weeks ago I was getting pinging using 91 when I loaded it up. I don't know if it was the change in octane or if it was the "freshness" of the gas itself

Like I said it the other thread I live in rural Mississippi.
I have gone around to several of the local gas stations and all of them have said they are not selling any or not much at all of the premium. One said he has only sold a few hundred gallons compared to thousands of 87. The other said he can't remember how long it has been since he has got a shipment of premium.
So I am going to try it this week and just see for my self if it works and does not ping I am going to stay with the 87. In my mind it just makes sense.

[SilvertipClassi]

07 Electra Glide Classic tried 87 bike runs rough, 89 octane bike runs fine & gets a bit better mileage than with 94 octane.

[Gunny4Sawx]

Originally Posted by bacon225

Like I said it the other thread I live in rural Mississippi.
I have gone around to several of the local gas stations and all of them have said they are not selling any or not much at all of the premium. One said he has only sold a few hundred gallons compared to thousands of 87. The other said he can't remember how long it has been since he has got a shipment of premium.
So I am going to try it this week and just see for my self if it works and does not ping I am going to stay with the 87. In my mind it just makes sense.

I'm not busting on you. I'm kinda curious about how long the gas has been sitting in the ground too. I just moved out here from DFW and have been shopping around for gas prices but I think I'll make a Shell station my fuel stop from here on out, just for consistency as well as I believe Shell to be quality fuel. I'll use 87 for a week then back up to 91 (all I can get in CA). I do know for certain that my bike ran like Sh*t in DFW on the Ethynol, those temps were always high 90s and at about 300' above sea level I believe.

[nytryder]

93 octane Amoco in my new 08 Road Glide.

[donpro1]

I've got a 97 and i run Premium only with the additive from HD. Occaisionally put in a FI cleaner, but only about once a quarter.

$4.12 * 5 gals = $20.60 (HD FLHTPI) tank good for ~ 175 miles
$3.98 * 30 gals = $119.40 (Ford '08 F150) tank good for ~ 425 miles
~2.5 tanks in the HD to go the saem distance as the F150 goes on one tank. Bottom line, $50 vs. $120 for the same distance.

[reefrider]

Premium here.
RR

[FAD]

I run 91 in my 07 EGC, when I had my FXLR's they ran better on 89
I could feel a serge when I ran 91 in them.
All this being said, my concern is that stations are selling so little 91, mostly due to auto's no needing it and gas prices, that we may see station not carrying 91 anymore. Not worth it to them to carry 91 when everyone is buying 87...we may be lucky to get 89 before to long, I hope not, but the times they are a changing.

[MaineUltraClassic]

On average, the price difference between 87 octane and 91 (93) octane is only 20 cents. When the average fill-up is 5 gallons or less, that's only $1 more each time.

With my build and tune, I use super all the time..........93 is preferred, but 91 seems to be much more popular around here now.

Steve