How do you make a 25 to 1 mix?
You add one container of oil (2.6 ounces) to half a gallon of fuel to achieve 25:1 ratio. 25 :1 ratio is 25 fluid ounces of gas per 1 fluid ounce of oil. So divide the total amount of fluid ounces of gas by 25 to find the amount of oil to add.
How much fuel does a Yamaha outboard use?
Select Yamaha Outboard Test Model Displacement Fuel consumption WOT Boat owner? Yamaha 250 HP V6 4.2 L – 254 cid 23.8 GPH Yamaha 300 HP V6 4.2 L – 254 cid 26.0 GPH Yamaha 350 HP V8 5.3 L – 325 cid 34.1 GPH Yamaha XTO 425 HP 5.6 L – 339 cid 36.8 GPH –
What kind of oil does a Yamaha 25hp use?
My 05′ 25hp Yamaha calls for 100:1 mix. I broke it in with about 10 gallons of 24:1 mix Yamalube and then switched to synthetic. Now I run Amsoil Sabre Outboard at 75:1 or 80:1. I run WOT a lot so the little extra oil helps and the Amsoil Syn burns very clean.
What kind of oil do you put in a Yamaha outboard?
100: 1 is not a “rich” mix . Its about the lowest proportion of oil in petrol that you would get away with. Its only 1% oil. 50:1 contains twice as much oil ( 2%). Most 2 stroke outboards used 50:1 from about 1970 onwards. Before that they used even more oil.
What are the features of a 25 hp Yamaha outboard?
The F25 features an external oil draining system, making for easy maintenance, by the boater or the dealer. The 25 hp is up to 25 percent lighter than its previous design, but that isn’t the only thing that makes it portable. It now features built-in carry handles, resting pads, a folding tiller handle and an easy oil retention system.
Select Yamaha Outboard Test Model Displacement Fuel consumption WOT Boat owner? Yamaha 250 HP V6 4.2 L – 254 cid 23.8 GPH Yamaha 300 HP V6 4.2 L – 254 cid 26.0 GPH Yamaha 350 HP V8 5.3 L – 325 cid 34.1 GPH Yamaha XTO 425 HP 5.6 L – 339 cid 36.8 GPH –
My 05′ 25hp Yamaha calls for 100:1 mix. I broke it in with about 10 gallons of 24:1 mix Yamalube and then switched to synthetic. Now I run Amsoil Sabre Outboard at 75:1 or 80:1. I run WOT a lot so the little extra oil helps and the Amsoil Syn burns very clean.
100: 1 is not a “rich” mix . Its about the lowest proportion of oil in petrol that you would get away with. Its only 1% oil. 50:1 contains twice as much oil ( 2%). Most 2 stroke outboards used 50:1 from about 1970 onwards. Before that they used even more oil.
What kind of fuel mix should I use for a 100hp Yamaha?
That is what I recommend you use. Many of the engines recommended for 100:1 back in the 80s and early 90s exhibited internal corrosion from too little oil coating very corrosion-vulnerable parts.