Good Scoop.... "New Fuel"
Tourer
Joined: Feb 2008
Posts: 494
Likes: 1
From: Paola, Kansas
I'll second the gas in South Dakota, Wyoming, and Colorado. We made the loop home from Sturgis down to Denver and back to Kansas City. One of the guys running a '90 evo had to dump his tank at one point. It was the worst gas I've ever seen until we got back into Kansas. Mine ran ok but got about 30-35 mpg at the worst point. Really makes you wonder.
Road Master
Joined: Nov 2007
Posts: 883
Likes: 2
From: Irving-Texas
Yeah it sucks, when ever I go out of the metro and find real gas my 08 runs like a top on it. when I'm in the metro mess I regularly run some RXP in every other fill up and it compensates nicely, if you haven't tried it give it a shot, its not an octane boost it just makes sure most of whats in your tank burns and isn't wasted. I don't know about other parts of the country but here its used a good deal. I swear by it with the reformulated pond scum they call gas nowadays
Tourer
Joined: Sep 2007
Posts: 383
Likes: 1
With gas being so high, nobody is buying high tess gas. Its laying in the tanks and going bad. I ran it in everything, Now the king is the only vehicle that gets the good stuff. 1 ounce of sea foam per gallon in the tank seems to help.
Tourer
Joined: Oct 2007
Posts: 333
Likes: 0
From: Phoenix, Arizona
Funny thing is... cool air has more density than hot air. I used to get much better fuel mileage in the winter.
Now that there's stupid ethanol etc in gas here in the winter months (Oct-Mar) I actually only get about 40mpg versus the 50+ I used to get. I don't hot dog or twist my throttle at intersections while bored at redlights...
poop, I say
Now that there's stupid ethanol etc in gas here in the winter months (Oct-Mar) I actually only get about 40mpg versus the 50+ I used to get. I don't hot dog or twist my throttle at intersections while bored at redlights...
poop, I say
Banned
Joined: May 2008
Posts: 708
Likes: 15
Audi states the need for premium, yet my A4 runs perfectly on regular (3.2L engine). Porsche states the same thing regarding octane levels, but my Porsche runs like trash on anything less than 93 octane, and more than 10% Ethanol is a big no-no that will supposedly cause major ignition and emission problems- so I buy BP 93 for the Porsche and my FLSTF- so I am helping sales of high octane gas.
All my vehicles run better in cooler temperatures as well.
All my vehicles run better in cooler temperatures as well.
Stellar HDF Member
Joined: Sep 2009
Posts: 2,114
Likes: 666
Gas today!! ??
A couple points:
1) Ethanol is an octane booster.
2) Ethanol stoich is about 9:1 - Gasoline is 14.7:1
So, while ethanol is a good octane booster it still takes more to get the engine to run good as applied to even with as little as a 10% blend.
IME, These V-twins seem to run fine @ 14.0-14.5:1 on gasoline
and run fine @ 13.5-13.8:1 on 10% blend.
My advice is to get your bike tuned for 14.0:1 in light load/low TP and 13.2-13.5:1 for heavy load/high TP. If necessary you can increase fuel delivery more if needed.
Hoping this helps,
Bob
1) Ethanol is an octane booster.
2) Ethanol stoich is about 9:1 - Gasoline is 14.7:1
So, while ethanol is a good octane booster it still takes more to get the engine to run good as applied to even with as little as a 10% blend.
IME, These V-twins seem to run fine @ 14.0-14.5:1 on gasoline
and run fine @ 13.5-13.8:1 on 10% blend.
My advice is to get your bike tuned for 14.0:1 in light load/low TP and 13.2-13.5:1 for heavy load/high TP. If necessary you can increase fuel delivery more if needed.
Hoping this helps,
Bob
Stellar HDF Member
Joined: Sep 2007
Posts: 2,469
Likes: 679
From: Vancouver Island B.C.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom
Verdad Gallardo
6 Weirdest Harley-Davidsons Ever Sold to the Public
Verdad Gallardo
7 Times Harley-Davidson Chucked Tradition Out the Window
Verdad Gallardo
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
Banned
Joined: Nov 2009
Posts: 2,119
Likes: 651
From: null
Ethanol is a big problem here in Colorado. It degrades quickly and takes octane with it, not to mention some of the other inherent problems. With current fuel prices, premium typically sits in storage to the point where the ethanol has substantially degraded by the time the fuel is dispensed at the pump. I've have great results with an additive called Star Tron made by Starbright. I discovered it through a marine dealer when having serious fuel issues in my high perf. boat. I now run it in all my motors. Their website gives the details of how it works and while the chemistry is over my head I just know it works in a big way.