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Started By
Message
do you use a fuel stabilizer in your boat gas?
Posted on 10/18/25 at 1:30 pm
Posted on 10/18/25 at 1:30 pm
there’s an ethanol free pump not far from my house so I usually use that. Do you typically add a treatment to your boat gas? Which one?
19
Posted on 10/18/25 at 1:37 pm to cgrand
Every time. Stabil
Posted on 10/18/25 at 3:06 pm to cgrand
Just gonna run it every month.
Good excuse to tell your wife at least.
“ save you thousands”
Good excuse to tell your wife at least.
“ save you thousands”
Posted on 10/18/25 at 3:31 pm to cgrand
Unnecessary if you use Non ethanol from what I could tell
Posted on 10/18/25 at 3:48 pm to cgrand
Stabil and Seafoam in my big Mercury 3.5 hp bass rig. No ethanol free gas in my one horse village.
Posted on 10/18/25 at 4:27 pm to hall59tiger
that’s what I was told as well. I just got a new motor and I don’t want to gum it up as the boat will sometimes sit for a month or two. I probably changed out carbs 5 times on the old motor. Tank is 12 gallons I could just fill it halfway but I need the ballast up front
Posted on 10/18/25 at 4:42 pm to cgrand
I use TCW3, 1oz per 5 gallons.
Seems to help a lot with all my small carburetor engines as well. I never have stuck floats or clogged jets anymore even after a year of storage.
Eta: I have an etech. This should work fine on any engine though. The only issue might be stuff with catalytic converters, not sure about that nor have I ever tried it.
Seems to help a lot with all my small carburetor engines as well. I never have stuck floats or clogged jets anymore even after a year of storage.
Eta: I have an etech. This should work fine on any engine though. The only issue might be stuff with catalytic converters, not sure about that nor have I ever tried it.
This post was edited on 10/18/25 at 4:44 pm
Posted on 10/18/25 at 5:55 pm to cgrand
Yes, either Sea Foam or Sta Bil.
Posted on 10/18/25 at 6:00 pm to cgrand
Ethanol free and seafoam in my boat tank.
Posted on 10/18/25 at 7:14 pm to cgrand
Ethanol free and Quickleen.
Posted on 10/18/25 at 7:33 pm to cgrand
I can tell you what “might” happen if you don’t.
Several years ago I bought a fairly large offshore boat.
Bought it used, but had set up for a few years with 300 Gallons of regular fuel!
Started fine and ran at low rpm’s great. But, would bog down if you pushed it. Had a pair of 225 merc optimax w low hours on them. Compressions were great and just could not get it to jump onto plane like it should.
After several trips to the river I bought a 5 gallon external tank and ran one, then the other off the clean fuel. Bingo. Ran great.
Started a complete refit of all fuel lines, got rid of 300 gallons of bad gas and problem solved.
The gas in the tank looked like orange cool aid. I tried to burn some. It burned like diesel. No balls at all.
Worst part was in the lines. There was junk all built up in the lines. Looked like crushed up butterfinger. Not gummy, almost crunchy. It formed in the lines and then broke up and clogged low spots and bends.
What a mess.
After that I kept good treatment in it all the time. Worth every penny.
One tank of gas going bad on you is probably worth several years of treatment. Especially on an offshore boat.
Several years ago I bought a fairly large offshore boat.
Bought it used, but had set up for a few years with 300 Gallons of regular fuel!
Started fine and ran at low rpm’s great. But, would bog down if you pushed it. Had a pair of 225 merc optimax w low hours on them. Compressions were great and just could not get it to jump onto plane like it should.
After several trips to the river I bought a 5 gallon external tank and ran one, then the other off the clean fuel. Bingo. Ran great.
Started a complete refit of all fuel lines, got rid of 300 gallons of bad gas and problem solved.
The gas in the tank looked like orange cool aid. I tried to burn some. It burned like diesel. No balls at all.
Worst part was in the lines. There was junk all built up in the lines. Looked like crushed up butterfinger. Not gummy, almost crunchy. It formed in the lines and then broke up and clogged low spots and bends.
What a mess.
After that I kept good treatment in it all the time. Worth every penny.
One tank of gas going bad on you is probably worth several years of treatment. Especially on an offshore boat.
This post was edited on 10/18/25 at 7:35 pm
Posted on 10/18/25 at 7:55 pm to Bigsampson
quote:
orange cool aid
Been my experience dealing with a couple of these laid up boats during covid. Boats were in such high demand then people were pulling anything that floats out of memaws barn and it would sell.
orange bad gas has a distinctive smell. Nasty shite. Will rot fuel hose and creates all kind of varnish in carburetors.
Got lucky a couple times by taking a fuel sample first as soon as you see that orange tint don't start it. If fuel injected had luck with draining down the fuel rail and getting fresh gas to the injectors otherwise would be cleaning injectors but if you catch it you can save it.
On the carbed motors that gas sitting int there fricked the carbs. Had to dissasemble and run through an ultrasonic cleaner. That vanish was so nasty normal carb cleaner didn't do shite and you'd marr the carb trying to clean it.
Posted on 10/18/25 at 8:00 pm to Stat M Repairman
Dealing with the bad gas in the tank, I used a Milwaulkee M18 pump to draw down the tank. Had a translucent vinyl tubing as the suction hose and see a huge blob of ethanol sucked through the pump. shite congeals and floats around like a blob of grease in the tank.
Also ran into an issue with the pickup tube-screen in the tank getting clogged with that ethanol varnish.
Lesson learned, ethanol fuel is nasty stuff it's well worth the price and hassle of non-ethanol.
Ethanol wrecks the entire fuel system, soup-to-nuts.
Also ran into an issue with the pickup tube-screen in the tank getting clogged with that ethanol varnish.
Lesson learned, ethanol fuel is nasty stuff it's well worth the price and hassle of non-ethanol.
Ethanol wrecks the entire fuel system, soup-to-nuts.
Posted on 10/18/25 at 8:11 pm to cgrand
I use nothing but ethanol free in all things marine or small gas engines.
Posted on 10/19/25 at 5:28 am to cgrand
That farm review guy off You tube just did a review of fuel stabilizers. A 2-3 year effort on his part.
Stabil won on almost all counts.
I've used it for years with good results. Meaning, everything starts when it should.
Stabil won on almost all counts.
I've used it for years with good results. Meaning, everything starts when it should.
Posted on 10/19/25 at 6:51 am to cgrand
No. I run 87 gas, add Ring Free every couple fillups. But my boat does not sit.
Posted on 10/19/25 at 9:05 am to ecb
quote:
use nothing but ethanol free in all things marine or small gas engines.
Ditto
Posted on 10/19/25 at 10:39 am to cgrand
When I owned an outboard, it got Marvel Mystery Oil. A couple ounces in a full 6 gallon tank kept it running good.
Posted on 10/19/25 at 12:02 pm to cgrand
Startron fuel stabilizer. Best on the market.
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