2006-10-11 07:14:53 · 8 answers · asked by jo00017 1 in Cars & Transportation ➔ Motorcycles
Twin cams require at least 91 octane.
2006-10-11 11:04:22 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Harleys use big air-cooled engines with relatively low compression; I doubt that you'll need anything higher octane than 87. If I were you, I'd start out by putting in the lowest octane possible, and listening for knocking. If there's knocking, move up to mid-grade.
I don't know what the owner's manual recommends. High-octane gas is generally a waste of money, unless you're dealing with high-compression engines.
2006-10-11 16:02:44 · answer #2 · answered by Thumprr 3 · 0⤊ 1⤋
I myself use Ammoco Gold..the bike requires 91 octane and the gold just has cleaners that do a good on injectors..but any gas that is of 91 octane or better is alright to use
2006-10-12 08:25:08 · answer #3 · answered by hardly_d 3 · 0⤊ 0⤋
I use Premium in my Superglide. 93 Octane.
If you spent the money for a Heritage, why go cheap now?
Things may run on cheap gas, but they always run better on premium (except B&S lawnmower engines, which specify 87 Octane).
2006-10-11 17:12:37 · answer #4 · answered by Firecracker . 7 · 0⤊ 0⤋
All of mine run on 92 octane or higher. Anything less & the engine knocks like a bear.
2006-10-15 13:58:20 · answer #5 · answered by preacher55 6 · 0⤊ 0⤋
I use midgrade on my Buell ,but its not stock , I also have a 86 Sportster that does mind the cheap stuff
2006-10-12 22:52:18 · answer #6 · answered by Fatwa Freddie 3 · 0⤊ 0⤋
Most Harley's do not have high compression engines, so regular gas will do just fine.
2006-10-11 16:45:50 · answer #7 · answered by JustAnotherJoe 3 · 0⤊ 1⤋
I use gasoline. It works better than diesel or kerosene.
2006-10-11 14:25:36 · answer #8 · answered by Anonymous · 0⤊ 3⤋