BobsGL1500 <bobsg...@aol.com98> wrote in message
The dealer told me not to use a specific brand however and for the life of
me I can't remmeber which one. I'm almost thinking it was Sunoco high test
because of high amounts of methanol but don't quote me on that. You may want
to check that out. If anyone knows what gas I shouldnt be putting in please
remind me. Thanks.
My owners manual said 91 octane so I've been using the highest grade available,
which is usually 93. The mid grade is 89 and I don't know if that is enough.
It would be nice to hear from someone who has used lower grades for awhile and
whether it has caused a problem.
Grumpy - http://grumpysplace.net <----- We've moved!!
1987 XLH 1200 - The Wolf
2000 FLSTC - Babe
"Nobody loves me but my mother...and she could be jivin' too" - B.B. King
Michael Hewitt wrote in message <38BB1347...@charter.net>...
I've used several tanks of 89 octane in my 00FLHTC with no noticable
differences or pinging. 91 octane is sometimes hard to find on the backroads
here in Iowa. I have 95" big bore with SE mikuni carb, JM20 cams, SE6200
ignition and Kerker slip-ons. Plugs read ok. I don't make a habit of the
lower grade gas but have been forced to go that way on 8 or 10 fill-ups.
And, name your poisen-money's on the bar.
>run the high octane. in the long run, its better for it. amoco ultimate
>(the clear gas) is best. the newer bikes don't neccesarily need it, but it
>makes a difference in the long run. ~mule
There was a thread along these lines in the sportster mailing list
awhile back. The general consensus was that you don't want to run
octane above that recommended for your particular motor for three
1) Running too high an octane reduces power. (High octane gas
doesn't have any more energy, it just combusts later.)
2) Running too high an octane increases carbon buildup which
leads to pinging, detonation and possible engine damage.
3) If you're going to a higher octane fuel in order to solve a
pinging problem, you're not solving the right problem (usually a lean
condition) and you're actually exacerbating the problem in the long
run (see 2 above).
In summary, you're right, it makes a difference in the long run. Just
not the difference you had intended.
"CBS News could make a simple change and save themselves millions
of dollars. Turn Dan Rather's teleprompter around."
> "BC Wilson" wrote:
> >run the high octane. in the long run, its better for it. amoco ultimate
> >(the clear gas) is best. the newer bikes don't neccesarily need it, but
> >makes a difference in the long run.
> There was a thread along these lines in the sportster mailing list
> awhile back. The general consensus was that you don't want to run
> octane above that recommended for your particular motor for three
> 1) Running too high an octane reduces power. (High octane gas
> doesn't have any more energy, it just combusts later.)
> 2) Running too high an octane increases carbon buildup which
> leads to pinging, detonation and possible engine damage.
> 3) If you're going to a higher octane fuel in order to solve a
> pinging problem, you're not solving the right problem (usually a lean
> condition) and you're actually exacerbating the problem in the long
> run (see 2 above).
> In summary, you're right, it makes a difference in the long run. Just
> not the difference you had intended.
Ron, not to doubt your word but I would be interested in seeing the study or
proof from which this is based on.
hawgeye AH96 BS98 CTNS
$tealer-dealer$ page: http://www.hawgeye.com/sd.htm
RMH FAQ: http://home.earthlink.net/~mildness/yo/frames/faqv2frm.html
Terry, here is one place to start:
Octane rating of your gas has absolutely nothing to do with valves,
seats, or their longevity.
Lee Petersen <brai...@flash.net> wrote in message
> Then why does the manual strongly suggest to use 91 Octane? They did build
> the bike
Because 91 octane is required for the compression and
ignition timing. All unleaded gas of any octane has the same
properties as far as the valves and seats are concerned, the
only thing the octane rating means is how fast the gasoline
will burn at a given compression ratio.
As far as I can tell, the guy with the goofball ascii doodad
for a name has somehow confused the octane rating system
which has not materially changed in fifty years, with the
alleged qualities of old fashioned leaded gas. Tetra-ethyl
Lead used to be added to gas as an octane booster. One of
the by-products of combustion was Lead metal, some of which
would plate out on the valve seats and/or valves. Since Lead
is a soft metal, it was assumed that the soft Lead acted as a
sort of cushion between the valves and seats that lessened
wear in the form of valve seat recession. Leaded gas has been
unavailable at the pump in the U.S. for almost twenty years
now, so even if you believe that the Tetra-ethyl Lead was good
for your valves, you are SOL now. But even back then, the
octane rating system was a measure of how fast the gas burned,
not a measure of how much Tetra-ethyl Lead was in the gas.
McEvoy? Not too many of those around. Got a relative in the Seattle area
BobsGL1500 wrote in message
>I've only had my 00 Fatboy for 2 months and have been using 93 octane
>fuel. I have a couple friends that have a Heritage Classic and a Softail
>and they have been using 87 octane regular fuel since they got hem in
>November. They say it runs fine with no pinging or knocking. All of our
>are stock, well for now anyway. I know that the fuel injected bikes come
>decal that suggests using 91 or higher octane premium fuel. The 00 Softails
>don't have such a decal.
Geez dude, look in yer owners manual. It's right there in print. I just
bought a '00 *carbureted* bike and the owners manual says 91 or better
octane. Just 'cause there ain't no "sticker" on the damn filler door don't
mean ya gotta go blank on us.
>What has everyone who has a 00 Softail or 99 model with the TC88 engine
>been using? Just curious. Thanks
I use *premium*, period. I'm in Central Calif. where I pay $1.92 a gallon
for premium (92 octane) compared to $1.71 a gallon for regular (87 octane).
That's 20 cents a gallon between the two. My bike holds 5 gallons of
gasoline. That's A BUCK difference per fill-up. One dollar.
If one dollar per fill-up makes that much of a difference to you then
*maybe* you ought'a re-think your decision to buy a $15-$19K motorcycle.
Not flaming you, just befuddled as hell why a dollar a tank would bother
Preacher - AH #89
Preacher wrote in message <89uo52$7f4$1...@slb7.atl.mindspring.net>...