gas additive...yes or no?
Novice
Joined: May 2008
Posts: 18
Likes: 0
From:
RE: gas additive...yes or no?
HMMMMMMM
I guess I'll switch back to 91 oct for a while and track the difference. It's not that big a deal on 5-6 gallon fillups, I just always felt why spend the extra if it's not needed. The pinging I notice occasionally only happens when I've been on the road for a few hundred miles and in the heat. I attributed it to thin oil not fuel but who knows, I am not a mechanic, chemist or race expert. Just a fan and enthuisast. I'll report back on the numbers and any noticable performance changes in a couple weeks.
thanks
s
I guess I'll switch back to 91 oct for a while and track the difference. It's not that big a deal on 5-6 gallon fillups, I just always felt why spend the extra if it's not needed. The pinging I notice occasionally only happens when I've been on the road for a few hundred miles and in the heat. I attributed it to thin oil not fuel but who knows, I am not a mechanic, chemist or race expert. Just a fan and enthuisast. I'll report back on the numbers and any noticable performance changes in a couple weeks.
thanks
s
Elite HDF Member
Joined: Jun 2007
Posts: 4,867
Likes: 268
From: People's Republic of Boulder Colorado
RE: gas additive...yes or no?
I've used Sea Foam for many years and I believe that it works very well. I put it in the gas at a concentration of about 1 oz/gal about every 3rd or 4th tank in my '82 FXE. When I got the bike, it had 16,000 miles & the top of the pistons were coated with thick oily gunk and it used about 1 qt of oil/1000 mi. I've put 6000 miles on it and now the top of the pistonsare essentially dry, bare metal and it uses no oil between 3000 mile changes, other than a couple of ounces thru the chain oiler. I use it in the oil in my car about every other change, in the gas about every 10th tank.
Good luck,
John
Good luck,
John
Novice
Joined: May 2008
Posts: 18
Likes: 0
From:
RE: gas additive...yes or no?
Right on Brother.
If in a few weeks i figure out how to attach a pdf, i'll upload my excel mileage chart with the results. BUT not sure i'll roll off the throttle so I don't know if it will show better mpg or just a bigger smile on my face.....
while riding.
Appreciate the comback.
s
If in a few weeks i figure out how to attach a pdf, i'll upload my excel mileage chart with the results. BUT not sure i'll roll off the throttle so I don't know if it will show better mpg or just a bigger smile on my face.....
while riding.Appreciate the comback.
s
Road Warrior
Joined: Nov 2006
Posts: 1,738
Likes: 7
From: St. Charles, IL
RE: gas additive...yes or no?
I run a bottle of Techron Fuel System Cleaner through my vehicles once a year. Noticable change in the idle and throttle response after use. Most vehicle manufacturers recommend Techron in name. In bikes I split the 12 ounce bottle over 2 or 3 tankfills
Intermediate
Joined: Jun 2007
Posts: 29
Likes: 0
From:
RE: gas additive...yes or no?
Last week I was talking to a newly gradated HD mechanic. I complained that my 07 ultra pinged depending on what brand 91 octane fuel I used. He recommend two Tier 1 stations and added, to never add any fuel additives, that some contain chemicals that "melt" the tank liner HD sprays in the tanks. Don't know if it's fact, but thought I'd pass it on.
Road Master
Joined: Jan 2006
Posts: 918
Likes: 1
From: Bulldog Country
RE: gas additive...yes or no?
Mine like a shot of Sea Foam every 4 or 5 tanks. Keeps her purty on the inside!
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Tourer
Joined: Nov 2007
Posts: 284
Likes: 1
RE: gas additive...yes or no?
ORIGINAL: Firetender
...
BTW, because there is less kcal energy contained in 87 octane gasoline rather than 91 or 92 or 93 octane gasoline, it defies science and allthe laws of thermodynamics to suggest that you can get better mileage from 87 octane fuel than 91 octane fuel. It's quite impossible and silly.
...
BTW, because there is less kcal energy contained in 87 octane gasoline rather than 91 or 92 or 93 octane gasoline, it defies science and allthe laws of thermodynamics to suggest that you can get better mileage from 87 octane fuel than 91 octane fuel. It's quite impossible and silly.
Can you show, for my benefit and that of others on this site, if in fact High-Octane gas does have higher a energy index/potential (kcal = kinetic or caloric?) than low-octane? Isn't the difference merely in that high-grade has more anti-detonation (and higher detergent) additives, therefore can tolerate a more advance ignition timing? I am not a proponent of using 87 octane in Harleys, but merely want to get the record straight.
