2022 AR195

[Marduini89]

What’s up everyone. Just recently purchased my 2022 AR195 and I love it. Looking for some feedback regarding fuel though. I just took the boat down to the marina where it will be staying for the foreseeable future but I just realized all the marinas down in St.Augustine only carry 89 ethanol free gas. I know the manual states 91 or higher with the supercharged engines. Will I damage the boat if I constantly put 89 in it? Really frustrating since I just signed a 1yr contract with the marina. The octane level never crossed my mind. Appreciate your input.

 

[Crob83]

What’s up everyone. Just recently purchased my 2022 AR195 and I love it. Looking for some feedback regarding fuel though. I just took the boat down to the marina where it will be staying for the foreseeable future but I just realized all the marinas down in St.Augustine only carry 89 ethanol free gas. I know the manual states 91 or higher with the supercharged engines. Will I damage the boat if I constantly put 89 in it? Really frustrating since I just signed a 1yr contract with the marina. The octane level never crossed my mind. Appreciate your input.

You should definitely run 91 or higher as stated by yamaha. I would not run 89 in it all the time

 

[steveinmd]

Asking the knock sensors to keep pulling timing is a recipe for disaster. Yes, that is their job, but they need to detect detonation first before pulling timing. The ecu will want to resort to the preferred timing map. So you will have a constant back and forth.

What about bringing in your own fuel containers? Top off every time you go there. It isnt ideal, but an option. Just get a fuel rated transfer system.

 

[212s]

I concur...91 is what the engines are tuned to use and you'll get the best performance with 91. As mentioned, I'd just use dolly fuel cans or pull the boat and fill it at a local gas station. Unless you go through a lot of fuel each trip, you can probably get away with a 15gal dolly to top up. Or if you have half a tank of 89, get another half of 93 and mix to 91...costs more but might be worth the hassle.

 

[Farny]

So I tried both on that engine. We refueled on the lake one day. All they had was 89 ethanol free… It took me 1 tank of the 89 ethanol free to go back to the super unleaded. One could easily tell from the exhaust and power performance the 89 ethanol free was not running as good. Never again was my conclusion

 

[marcham]

You'll need to buy a case of octane booster.

 

[Jim_in_Delaware]

We had a good discussion on a thread I posted last August asking about the use of regular and premium gas,

https://jetboaters.net/threads/anyone-have-difficulty-finding-premium-gas-while-on-the-water.35147/#post-565846

Jim

 

[2kwik4u]

You'll need to buy a case of octane booster.

This is the easiest solution if you're keeping the boat on the water.

 

[Adrian @ JB Solutions]

Let's switch the discussion.... I switch between 91 (Sam's Club) and 93 (Wawa) on mine - does that matter?

 

[Crob83]

Let's switch the discussion.... I switch between 91 (Sam's Club) and 93 (Wawa) on mine - does that matter?

I hope not because I've used both quite a bit.....lol

 

[marcham]

Let's switch the discussion.... I switch between 91 (Sam's Club) and 93 (Wawa) on mine - does that matter?

Nope....

 

[212s]

I hope not because I've used both quite a bit.....lol

It's fine to use higher octane, it just wastes the costs involved if the engine can't take advantage of it. That's why using premium fuel 91 in a car that calls for regular 87 is a waste of money. Sure you'll get slightly better fuel economy due to less ethanol, but the cost per mile is still higher than the cost per gallon netting a gross loss. Same goes for using high octane 94 when your car calls for 91...you're not getting "cleaner" or "better" fuel, just less dollars in your wallet.

On the other end, using lower octane actually causes premature detonation and hurts performance and mileage. The knock sensors in the Yamaha engines will help by detuning the ignition, but again at performance loss and mileage. It's best to use the minimum requirement so the engine can work as it was designed.

None of this applies if you're tuned or modded your engine of course.

 

[Crob83]

It's fine to use higher octane, it just wastes the costs involved if the engine can't take advantage of it. That's why using premium fuel 91 in a car that calls for regular 87 is a waste of money. Sure you'll get slightly better fuel economy due to less ethanol, but the cost per mile is still higher than the cost per gallon netting a gross loss. Same goes for using high octane 94 when your car calls for 91...you're not getting "cleaner" or "better" fuel, just less dollars in your wallet.

On the other end, using lower octane actually causes premature detonation and hurts performance and mileage. The knock sensors in the Yamaha engines will help by detuning the ignition, but again at performance loss and mileage. It's best to use the minimum requirement so the engine can work as it was designed.

None of this applies if you're tuned or modded your engine of course.

I agree, but a lot of gas stations don't have 91. So 93 it is