Should you use E15?

[Cobb]

Im glad I dont own a prius.

[Hersbird]

There are a ton of seadoo and skidoo owners who learned the hard way they can't even run E10. It's not just sitting with the gas, it's running it too. As said it leans it out a little but where it killed them is all the fuel lines are turned into green goo on the inside which ends up clogging the fuel filter. Then it really leans them out and they are dead in short order. This is also common on older outboards. Maybe you get by on a doggy Briggs motor but for high performance stuff I wouldn't run it unless you make adjustments and modifications for it.

[Frank Lee]

Ha ha- the Briggs runs on regular and the Doo fails- which one has the "performance"?

[Hersbird]

I have a 2 cylinder 700cc Briggs on my mower that makes 24 HP but the 570cc 2 cylinder on my old seadoo made 65hp and weighs less. The seadoo is reliable with traditional gas, it was the fuel lines and ethonal that caused a problem. The factory switched lines on newer versions and you can on the older versions as well but it destroyed probably 1000s of pistons in the process. My last 1 cylinder 16hp Briggs motor wasn't all that reliable itself, sending a rod through the block after 8 years of light use (maybe 20-30 hours a year) . A seadoo with out the fuel issue will go more hours then that normally but I think so would a Briggs normally.

[Cobb]

I cant think of anything productive you can do on a sea doo that warrens ethanol fuel. A jury rigged cat maybe a better idea to make it cleaner or just get a diesel engine and go slower.

[Hersbird]

The E10 is enough to cause problems and it is the only thing available. This thread was questioning if e blends can hurt. Answer, sometimes.
Productive? Its purpose is to produce joy if it wasn't fast, THEN it wouldn't be productive.