What grade fuel to use

[Dr Honda]

So i can run tolouene in my ski..what would be a good ratio to run.

One of my skis run on race fuel 110 octane i mix 4 gallons of race fuel and 3 of 93 octane

I use to run torlene in my turbo coupe years ago and have been thinking about running it in my ski but wasnt sure if i could

Led'ed fuels use to have toluene in it. They took that out (along with benzine) in the late 80's. BUT... Toluene is a harsh solvent, and it's VERY hard on the carbs.

I personally run White Gas in my small 2-stroke engines. It's pure, and clean, and doesn't leave deposits in the carbs. Best of all... it can sit, and not "Gum" the fuel system. Even though... it only is rated at 65 oct... it burns clean, and slow because of the lack of additives.

do you have to run 91 octane in a turbo

Generally Yes. Because of the heat, and pressure... it needs the higher oct fuels to keep detonation at bay.

 

[wiscoriver]

Proper octane is mainly about compression ratios... unless your running turbos or etc. Most seadoos will run fine on 87. I would recommend using a stabil or simliar....something that is used daily to help basically make the fuel non-corrosive and more effecent. The premium fuel in our area is still "normal". So I try use premium for storage at least. I have found in my sleds with tiny pilot jets(carbs) that the premium fuel seems cleaner with less deposits over time. Unless there are mods...run what the company recommends when it comes to pump gas.

 

[470]

Saying very hard on carbs is a broad statement. On float carbs it has no effect. I can't vouch for the possibility of issues with diaphragm carbs as I've never tried it. Like you said, it was in gas years ago.It was taken out for health/environment reasons and not that it was harsh on fuel systems. Not that long ago Formula 1 cars ran on 84% toluene. White gas is nothing more then naphtha which you've stated before is harsh and not to use though it's also one of the ingredients in marine stabil and seafoam. I personally have never had problems with toluene,naphtha or acetone when blending fuels. I can't say the same thing when blending in oxygenators though

 

[Ronsse610]

i use shell V power (91) for my 01 RX, runs clean and good mileage

 

[original420racing]

so how much toluene do i mix with gas ..

 

[470]

Litres of gasoline x Octane (eg.95 or 98) + (Litres of toluene x 114 devided by the Total Litres of Gasoline & Toluene will give you your oct rating.

 

[m.colley]

we still have a few stations in town that are non ethanol, most are independents. Both GA and AL require stations to label pumps if their selling E10, but of course their wording leaves you wondering, "may contain up to 10%"..

 

[Dr Honda]

White gas is nothing more then naphtha...

Hummmmmmmmmm.....

I'll have to dig into that a little. I was thinking the Naphtha was closer to diesel/Kero/Jet-A. (very oily)


*****EDIT*****

It looks like it has evolved over the years. The original fuel was Naptha, but now it's a blend of "light hydrotreated distillates", with... "a flammability similar to gasoline."

 

[470]

The hydrotreated distillate that you speak of is Naphtha, You can confirm that on the msds sheet for coleman fuel which is white gas. I haven't check though I think gas has a lower flash point by something like 50º and the vapor pressures are different though gas does change the vapor pressure depending on the seasons. Most gas these days still contain toluene,xylene,benzene naphthalene to varying degrees. I've blended fuels years ago for sled racing till the Techs put an end to it I just wish I would have mastered the oxygenators more. It was fun playing with nitrates,chlorates and peroxides though I did smoke more then a few pistons and bent a fair share of rods and cranks.

 

[Dr Honda]

Interesting....


Was this a hobby thing... or did you work for the gas companies? For me... knowing was always just a hobby thing. I did work as an R&D Chemist for about 8 years before opening my shop. (Degrees in Physics, Bio, and LA) So, I understand what the components do. BUT... I've never tried to blend my own fuel. (other than putting oil in it) I did make Bio-Diesel for my old truck too. But the chemistry was known. Also, on the old injection pump, I could run most oils straight as long as the weather was warm enough.

 

[470]

I spent 17 years in the R&D dept. @ skidoo for their race sleds. I spent most of my time jetting and blending fuels wish was fun but I should have spent more time grasping more knowledge on electrical systems (my weak point lol) I just got burnt out being on the road and walked away from it. I also spent time blending fuels for top fuel cars and just wrenched on winged sprints,modify's and midgets hence the need for my street rod. I still have a garage full of experimental engines that where hand built and never went to production. My two cherished motors are a triple cylinder twin RV 340cc that puts down 148hp and a triple cylinder twin RV 1100cc thats just short of 300hp.The fuel testing systems the techs have these days make blending fuels a thing of the past plus getting band is always a bad thing. Being a plumber/pipefitter now gets me to the tank farms and ethanol plants to pick the brains of the chemist and engineers. The ethanol guys are pretty hush hush but the tank farm guys blending the stuff tell everything. Lets just say your much safer running the 89 oct that you do and even that is off sometimes.

 

[Pitt]

Hello everyone, I worked at an oil refinery for 30 years. Just retired this month. Life is good. I've always used premium unleaded fuel in my 787. I know it's not needed per the octane but I also know that many components go into regular gasoline which then can have ethanol added to it. Multiple, up to 7 or 8 components are blended in varying mixtures to get the spec that is needed for the lower grade gasolines. The premium gasoline has only a few higher refined components that I feel are much better and make the gasoline a more stable longer lasting better product. My only proof that this might be a better fuel to burn is 400+ hours on a 96 Challenger. Never worked on carbs. In fact never worked on motor besides yearly plug changes and maybe cleaned the Raves 3 times total. I also have always used the synthetic oil since day one. I've recently discovered this forum and joined. Very good info here. Thanks