what fuel additive is best when filling up, OX66..

[pstephens46]

Correct. There are no non Ethanol gas on long island, as far as i know.. Unless someone else here can verify differently?

That stinks. May want to start packing for Florida....

Some boating publication did a comparison test of additive. Can't remember which one...

[scofflaw]

Keeping the tank full isn't the way to go. Tanks are vented , so air will be in there anyway. Keep the fuel level according on how you use the boat.

[99yam40]

Yamaha claims ringfree is the cure all to all your fuel issues. Look at the cost$$$$$
https://www.shopyamaha.com/product/d...?b=Search&d=34

You asked, you get opinions
so now you get to decide yourself what you use.
I use a smaller tank so I use most of the fuel on a trip.
I pull the tank out of the boat and store it out of the sun and rain.
but I use a 40 hp so I do not need a big tank

[99yam40]

Keeping the tank full isn't the way to go. Tanks are vented , so air will be in there anyway. Keep the fuel level according on how you use the boat.

the more air you let in the tank the more moisture the fuel is exposed to.
More fuel in tank means less air in there
just common sense

[scofflaw]

the more air you let in the tank the more moisture the fuel is exposed to.
More fuel in tank means less air in there
just common sense

No sense to that statement... The surface area of the gas in the tank will be the same whether full or partially full. Unless you have it flowing out the vent hole or the filler neck

[99yam40]

Surface area is not the only thing involved.
if you have a 100 gal tank 1/2 full or 90% full you should have the same amount of surface area exposed to air if the tank is a normal tank.

but the 1/2 full tank will have a lot more air and moisture in it that can and will condense out on tanks walls or be absorbed directly in to the e gas on the surface over time. It is not like the tank breaths in and out that much just sitting there
The less air you let in to the tank the less moisture you let in

[throrope]

I advocate always using fresh gas, but surmise my routine is likely difficult for a 200 hp boat.

For our 90 hp TLR I pump all fuel from the boat into the truck and empty the carb bowls between trips. I also right-sized the tanks for our use. For me no fuel means none to go bad.

[carlitos]

you might want to go to: "pure-gas.org" for a list of ethanol-free gas stations in the U.S. & Canada.

[DennisG01]

Yamaha claims ringfree is the cure all to all your fuel issues. Look at the cost$$$$$
https://www.shopyamaha.com/product/d...?b=Search&d=34

Are you basing that sarcasm on theory or fact?

The stuff works. I use RingFree and Startron religiously (have been using Startron with other things for 10+ years). I'm knocking on wood as I type this, but I don't drain ANY toys (boats, weedwhackers, chainsaws, etc) that I have and I have yet to have a fuel problem. Last year I removed my O2 sensor to clean it. I had the engine for 3 seasons and had never done it. I'm unsure if the PO ever did. Anyways, when I got it in my hands, I couldn't understand what the fuss was about cleaning these on a regular basis. I couldn't find anything that needed cleaning. I then took the little barbell looking thing with me to the dealer to ask a question about it and get a new O2 gasket. He took one look at it and point blanked stated "You must use RingFree?" Said he can tell instantly who uses it and who doesn't. I'm always skeptical of additives, but that sealed the deal for me regarding RF - along with numerous good reviews of it by other members here.

[fairdeal]

The stuff works. I use RingFree and Startron religiously...

and I have yet to have a fuel problem.

Perhaps it "works".

Or perhaps you would not have had any problems anyway, had you not used them.

I'm glad you did not have any problems.

But without an "experimental control" - nothing was proven by your experience

like the pepper on the windowsills keeping elephants out of my house....

[DennisG01]

Perhaps it "works".

Or perhaps you would not have had any problems anyway, had you not used them.

I'm glad you did not have any problems.

But without an "experimental control" - nothing was proven by your experience

like the pepper on the windowsills keeping elephants out of my house....

Perhaps. And I understand what you're saying about a control. But at some point, with enough information, one can also extrapolate a conclusion based on others experiences and how they deal with these issues. We all know that gas goes bad - much faster with ethanol. There's lot's of information about that. I do feel it's a pretty good testimony for using these additives when I'm using fuel the way that I do (never draining, which is a conscious decision - not a lack of education about the subject).

I also work part-time in the marine industry and see just how many problems untreated fuel can cause.

What the Yamaha service tech told me, I feel, is pretty definitive, too.

A more specific example... In regards to snowblowers. My dad lives about 15 minutes from me. He has a similar sized snowblower to me. For three years straight, he refused to believe me about using Startron (or something similar). He, like me, would not drain anything at the end of winter. Come the beginning of next winter, his engine was gummed up. Mine started right up. Last year he finally used the stuff and it started right up this year.

[fairdeal]

I agree - "fuel degradation/polymerization is real - and there are substances - "stabilizers" - which substantially slow that process

and RingFree really contains a substance that can "clean" engines
(although depending on your brand of fuel, you may already be getting enough of it)

A more specific example... In regards to snowblowers. My dad lives about 15 minutes from me. He has a similar sized snowblower to me. For three years straight, he refused to believe me about using Startron (or something similar). He, like me, would not drain anything at the end of winter. Come the beginning of next winter, his engine was gummed up. Mine started right up. Last year he finally used the stuff and it started right up this year.

So that seems to come pretty close to a con*****ed experiment.

[Jason2tpa]

What additive is best used when filling up with gasoline for a 2000 OX66 250. I was told seafoam is good. Is there any other additive I should be putting in my tank after each gasoline fillup?

This particular subject has been beaten to a bloody pulp. Use the search drop down menu, type "fuel additives", and you'll have every opinion that could possibly be given.

Pay special attention to the member giving the opinion...boscoe, townsend, 99yam, panasonic, fairdeal, rodbolt, pstephens, just to name a few....they are most often spot on.

[panasonic]

Perhaps. And I understand what you're saying about a control. But at some point, with enough information, one can also extrapolate a conclusion based on others experiences and how they deal with these issues. We all know that gas goes bad - much faster with ethanol. There's lot's of information about that. I do feel it's a pretty good testimony for using these additives when I'm using fuel the way that I do (never draining, which is a conscious decision - not a lack of education about the subject).

I also work part-time in the marine industry and see just how many problems untreated fuel can cause.

What the Yamaha service tech told me, I feel, is pretty definitive, too.

A more specific example... In regards to snowblowers. My dad lives about 15 minutes from me. He has a similar sized snowblower to me. For three years straight, he refused to believe me about using Startron (or something similar). He, like me, would not drain anything at the end of winter. Come the beginning of next winter, his engine was gummed up. Mine started right up. Last year he finally used the stuff and it started right up this year.

Great example, the snowblower, and I agree 100%. Every year I go around my street after the first snow helping my neighbors get their blowers going...bad gas. Mine starts right up.

I harp at them to treat thier gas in the spring before putting their blowers away to no avail...

You can add to the list lawn mowers, chainsaws, dirt bikes....ect.

I just use regular fuel stabilizer...nothing special.

[scofflaw]

Post #22 specifically re RingFree:
http://www.yamahaoutboardparts.com/f...e-th28109.html


I'm one of the few that knows RF works. Been using it for approx 10 years. Many call it snake oil, and that's fine.



**I work on small engines (hobby/extra money), weed-eaters, chainsaws, mowers, etc.

Easily 95% are clogged carbs/ leaking fuel lines. I'll clean the carbs(dis-assemble and "cook") in a heated ultra sonic cleaner..

Spray down with brake cleaner, re-assembly and tune with a tachometer for max RPM's. My premix is Gas shok, oil, and RF.

The next day, (need to make sure it starts cold), most times, I have to re-tune the High Speed RPM screw as the orifices are EVEN CLEANER. That's from simply leaving my "mix" in the engine over night.

I usually get 500-another 1000 RPM's out of the engine (with a blower attachment-for LOAD).

These little engines (ask Boscoe on his recent purchase) are extremely susceptible to fueling issues. Way more so than the larger engines..

Let me get this straight....you soak the jets in your heated ultra sonic cleaner until you see daylight through them and then by soaking in this miracle product they continue to get cleaner ?