ADVrider

Go Back   ADVrider > Bikes > Old's Cool
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 02-15-2011, 05:09 PM   #1
stainlesscycle OP
Beastly Adventurer
 
stainlesscycle's Avatar
 
Joined: Jun 2008
Location: morgantown, wv
Oddometer: 2,084
best fuel for fiberglass tank?

both tanks are sealed (caswell), but i'm always paranoid ... i have not had a problem with caswell in fiberglass tanks yet - i have one that's been sealed for 10+ years without a problem - but there's always a first time.

options :

pump gas and drain tanks when not in use/leave cap off. fuel will be in tanks a day or 3 maximum.

or c12 and drain tanks anyways, i just don't gotta be in such a hurry about it. with c12 i'll probably have to rejet.

or avgas? i've never run it.... but supposedly there's a local place here that will let you pump up to 5 gallons into metal container. just walk right up.

c12 = expensive - $10 - $12 gallon, gotta drain it anyways. might get some bonus hp. probably not much.
avgas = cheaper, but i've not used it before
regular old pump gas = cheap, gotta drain it, paranoid about fiberglass....

is there anyone here who regularly uses a proven fuel in their fiberglass tanks?
__________________
current bikes
07 gasgas xc300-94 duc 900ss-86 morini camel (2)-84 IT200-83 IT175-78 guzzi lm1-77 pursang 250-76 morini 3 1/2 strada-76 frankentaco pursang 200-74 frankentaco pursang 200-74 morini 3 1/2 sport-74 mz ts250/0-74 puch 175 (3)-73 can-am 175tnt-71 guzzi frankeneldo-71 ossa Stiletto-70 frankentaco sherpa s(2)-66 morini corsarino(2)-63 morini corsaro + many more
stainlesscycle is online now   Reply With Quote
Old 02-20-2011, 05:23 PM   #2
motomike14
Thumper Crusader
 
motomike14's Avatar
 
Joined: Jan 2010
Location: Florida
Oddometer: 1,608
I have a caswell sealed tank (used the whole bit of the kit, sealed it twice) and have been using pump 93 gas for well over a year now. Not a single issue.

Caswell customer servie didn't recommend any stabalizer, so when it sits, I drain the tank and the carbs. I would just stick to the high octane pump gas; BP or Shell gas has been friendly to me.
__________________
"The bold adventurer succeeds the best. - Ovid

I drink the koolaid too...just not the orange kind.
motomike14 is offline   Reply With Quote
Old 02-20-2011, 06:50 PM   #3
Duck_Pilot
Retired Roadracer
 
Joined: Jun 2007
Location: Denver 'Burbs, Colorado, USA.
Oddometer: 5,042
I'd not recommend avgas. For several years, I used 100 octane low-lead, premixed in my 2T racebikes. It was a mistake. Switching to pump premium unleaded made it run much better, and with less tendency to detonate.

Avgas is a very "dry" burning fuel, without the additives that land-based engines need. As result, it was difficult to jet properly, because the plugs took forever to color. Premixing oil with the 2T motors likely saved them from the additional wear that would have happened in a 4T engine.

I know the question pertained to preserving your fuel tank, and my answer thus far hasn't helped with that. I've run Sinclair premium in my Ducati GT-1000 almost exclusively since new. I've had a touch of fuel tank spreading, but nothing obviously mis-shapen or unsafe about it.

Hope this helps.
__________________
" A man that can have patience, can have what he will." - Benjamin Franklin

"Man cannot imagine how life could be more difficult or complex. But Congress can." - Cullen Hightower

Honestly, I *do* like Socialists. They just need a little tartar sauce.
Duck_Pilot is online now   Reply With Quote
Old 02-21-2011, 03:44 AM   #4
Weaverman
Damaged goods
 
Weaverman's Avatar
 
Joined: Jul 2009
Location: Mid-Michigan USA
Oddometer: 58
The big problem with fiberglass tanks today is the ethanol in the fuel. Many boats have been forced to undergo fuel tank replacement or be scrapped due to the EPAs allowance of ethanol in our fuel. Over time, ethanol dissolves the resin leaving a leaky, softened, unrepairable mess. The resin in solution has also been known to ruin engines, causing rings and valves to stick, etc.

Not sure of your location, but try this site. It lists fuel stations who sell "neat" gasoline. Hope this helps. http://pure-gas.org/index.jsp?stateprov=PA

Also, I can't comment on how well the various tank sealers resist the effects of ethanol...perhaps a call to the manufacturer of the stuff you used would be helpful.
Weaverman is offline   Reply With Quote
Old 02-21-2011, 08:50 AM   #5
Luke
GPoET&P
 
Luke's Avatar
 
Joined: Aug 2004
Location: Idiotville, OR
Oddometer: 4,035
I've let E10 gas sit in a Caswell-lined fiberglass tank for up to two months and it ran fine. The only thing special I did was run the float bowl dry before parking it. This is in a 2T trials bike. Before lining the tank, a freshly cleaned tank and carb with fresh gas would gum up in about 45 minutes of run time.
Luke is online now   Reply With Quote
Old 02-21-2011, 10:11 AM   #6
JLeather
Bike Butcherer
 
JLeather's Avatar
 
Joined: Aug 2010
Location: Maryland
Oddometer: 291
Caswell is the good stuff, I think you'l be fine. I would definitely drain the tank if it's going to be sitting for more than say a month. Not only should that help with the tank, but this modern crap gas breaks down so fast that I wouldn't want to leave it in there too long anyway.

Don't forget about the fuel lines too. Old rubber doesn't like ethanol any more than fiberglass does.
JLeather is offline   Reply With Quote
Reply

Share

Thread Tools Search this Thread
Search this Thread:

.
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


Times are GMT -7.   It's 06:56 PM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2014