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Tim Tim is offline
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First recorded activity by BoatBanter: Nov 2006
Posts: 19,111
Default No more local Ethanol free fuel for me...

On Saturday, February 16, 2019 at 12:28:05 PM UTC-6, Bill wrote:
wrote:
On Sat, 16 Feb 2019 08:45:57 -0800 (PST), Tim
wrote:


On Sat, 16 Feb 2019 06:07:37 -0800 (PST), Tim
wrote:
- show quoted text -
===

Do you have a local airport? They all sell something called 100LL
(One hundred octane, low lead). It's pricey but you probably don't
need huge amounts.

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........

Seeing my Mercury 115 is a 1977, I’d think I’d like it.. But carrying 40
gal might shuck a wallet quickly. Lol!


===

Yeah, those bigger outboards can run through 40 gallons in no time at
all. I assume it's a 2 stroke? If so they seem to be a little less
prone to having the carb gum up. In my experience the problems arise
when the gas and motor sit around for a while. You could keep a
smaller tank of 100LL on hand and run the motor on it for a few
minutes before shutting down. That would help to avoid carb problems.
The other big issue with ethanol fuel is phase separation in the tank
which results in an accumulation of water. The judicious use of
Stabil and/or SeaFoam can help with that but I'd also add a good water
separating filter like a Racor between your fuel tank and the motor.
People are even doing this with dinghy motors.


My problem was so much water got in the tank, either phase separation or
something else, that the filter would fill up with water. Had about 5
gallons of water in a 60 gallon tank. When coming up on plane, that water
got deep at the pickup.


On the pontoon, I have three 12 gal and a 9 gal backup. I'm not filling them full due to expansion. and at least I can control the quality of the fuel and the moisture content. That's about the only advantage of outboard tanks. LOL

https://www.easternmarine.com/moelle...-tank-630012lp

https://www.wholesalemarine.com/epa-...ank-9-gal.html