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Author Topic: Fuel for Mokai  (Read 758 times)

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Offline Craig5251

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Fuel for Mokai
« on: February 01, 2019, 08:11:14 AM »
Can I use AV Gas for my engine? 7 hp Subaru.

Offline Painlesstom

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Re: Fuel for Mokai
« Reply #1 on: February 01, 2019, 09:13:25 AM »
Regular Non ethanol pump gas works best. These are not high compression motors and wouldn't benefit from the higher octane, it could actually cause you to lose some power. High octane fuel burns slower, and in a lower compression engine would be less efficient. So in the end you would spend more, and get less. Can you? Yes. Would I? No.
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Offline Craig5251

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Re: Fuel for Mokai
« Reply #2 on: February 01, 2019, 10:54:32 AM »
I won't use it.
I thought AV Gas was non ethanol, now I know .
It's not available in my area.
Q: regular unleaded, or premium. Any preference?

Offline Painlesstom

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Re: Fuel for Mokai
« Reply #3 on: February 01, 2019, 01:53:36 PM »
Regular 87 octane is what they were designed for, premium is just higher octane which is just costing you more $$ for nothing in return.

Always use some Ethanol treatment, ethanol makes a mess out of these carbs after a while. https://www.amazon.com/Lucas-Oil-10576-Safeguard-Conditioner/dp/B004FW77F0/ref=sr_1_4?ie=UTF8&qid=1549047103&sr=8-4&keywords=Lucas+Oil+10576-12PK+Safeguard+Ethanol+Fuel+Conditioner
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Offline Craig5251

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Re: Fuel for Mokai
« Reply #4 on: February 01, 2019, 04:07:02 PM »
Wow, I'm glad I asked! Thanks Tom.

Offline Painlesstom

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Re: Fuel for Mokai
« Reply #5 on: February 01, 2019, 04:56:23 PM »
 :) ;) :)
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Offline Maritimer

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Re: Fuel for Mokai
« Reply #6 on: February 02, 2019, 06:27:24 AM »
Check out https://www.pure-gas.org for ethanol free gasoline. Where I live, 91 octane gas is generally ethanol free.

== Steve ==

Offline rks1949

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Re: Fuel for Mokai
« Reply #7 on: April 01, 2019, 05:42:35 AM »
I use 87 octane with 10% ethanol,it's the ONLY gas available in my area. I run Sta Bil ethanol treatment in it and another trick is to disconnect the fuel line,and let the motor run until it is out of gas. This will save your carburetor.

Offline Beachcomber

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Re: Fuel for Mokai
« Reply #8 on: September 20, 2019, 10:19:38 PM »
Know this is an old thread but thought I'd chime in.  Up here in Alaska, a lot of folks run AV gas, 100LL (100 octane, low lead) in small engines on occasion, only because they happen to have it on hand flying into remote cabins, etc.  It does work in small engines, typically does not have a enough lead to cause sparkplug fouling, some say it burns a bit hotter, as Tom said it will not perform better because high octane is only beneficial in high compression engines.  Since it is leaded, not sure it's the best health choice for a motor that sits that close to the operator.  The biggest advantage of Av gas is it is non-ethanol and has a long shelf life.  It is far less likely to cause carb fouling due to varnish build-up, etc. so some use it to store their engines over winter.

Offline Painlesstom

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Re: Fuel for Mokai
« Reply #9 on: September 20, 2019, 10:31:41 PM »
Sure, avgas would work fine. Potential to foul the plug maybe, but the gains outweigh that risk. Doubt it would have any negative effect on the operator outside of the sticker price to get it out of the pump. lol  :D
Tom

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Offline fairweatherfisherman

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Re: Fuel for Mokai
« Reply #10 on: September 21, 2019, 09:14:40 PM »
Before the non ethanol gas became more readily available I ran some 100 LL for a while in my bass boat. I wasn’t able to detect any difference, but it was more stable.