Yamaha 4 stroke

[Dean]

I just purchased a 115 Yamaha 4-stroke.
It was recommended by the salesman I pour in a can of "Ring Free" with every tank of gas. How necessary is that?

Will Sea Foam do the same trick?

Thank you!
Dean

[Crappie Kid]

S E A F O A M

[Stormsearch]

Seafoam will basically do the same trick, but I wouldn't just pour a bottle per tank in. RingFree for basic use recommends putting 1 oz. for every 15 gallons of gas.

Seafoam and Ringfree used at higher dosages are more meant to tune/clean a used engine, clean out carbon deposits, etc. If starting from new, I would just use the preventative maintenance method.

[LundBob]

Yes definetly use Ring Free but not an entire bottle. He's just trying to get you to buy a bottle everytime you fill the tank. Just follow preventative method as stated.

[MDT]

Stormsearch,
Could you be more specific on the Ringfree concentration needed for Tune/Clean. My dealer suggested this approach to address my Making Oil Problem with my 115's. He said to use concentrated Ringfree while running WOT for the two hours needed to reseat the rings. But, no one can offer up what a higher dosage is. Any help here would be appreciated.
MDT

[LundBob]

On the bottle it says what the dosage is for a shock treatment [i'm pretty sure it's called shock anyways] and a preventative treatment. I would just go with the shock treatment amount.

[MDT]

Thanks!! Bought a bottle today of Ring Free (made by Yamaha) and sure enough, it gives the shock treatment concentration on the back.
MDT

[Kelly (Wisc)]

I was having problems with my Yamaha F80, my dealer also recommended the ring free shock treatment. If I'm not mistaken the shock treatment was 1oz per gallon, I have a 36 gallon tank. That stuff is not cheap, it would have cost me over $30. I went with the Sea Foam, to be honest it didn't cure or prevent future problems. The only way to avoid problems was to drain the float bowls after every trip. The EFI on the F115 shouldn't have half the problems of the carbed F80.

[LundBob]

Thats why i went with the 115. Honestly it made my wife about 3 times more angry spending more money and maybe not REALLY needing the 115. She's not all into the technical mumbo jumbo of why an EFI is better than a carbed engine. She just knows it was however many hundreds of dollars more. But i knew i wanted the EFI and i didn't back down. Could i have gotten away with the 75 or the 90...yea. Was it worth the extra $700 to move up from the 90 to the 115...without question.

[Kelly(Wisc)]

It was well worth it, if my boat would have been rated for the 115 I would have gladly paid extra for EFI. I had to have my carbs rebuilt, just to get it started so I could have it winterized. Right there would have paid the difference.