Posts
64
Joined
5/15/2013
Location
Fort Wayne, IN
US
My manual says that running leaded fuel in my 13 yz250f will cause SEVERE engine damage. I am running 100 low lead aviation fuel mixed 50/50 with ethanol free 91 pump gas. bike runs great btw. I have run this mixture in many 4 strokes over the years with zero problems. I've never seen any damage on tear down much less severe. No lead deposits, nada.
The Shop
Written for airplanes but the cliff notes should still apply.
You will make more hp with straight pump gas however and better throttle reaponse than 100ll 50/50
And all the hate on ethanol isnt fully warranted - jetted properly it makes great hp with great throttle response and excellent piston cooling
Im always curious what people think vp uses in their power producing fuels...thats better than ethanol for storage etc. I think they would be surprised if they saw behind the curtain - only so many compounds out there that burn, stay in a liquid form, and produce good power...with good economy...
Pretty sure they dont want stuff falling out of the sky.
And doesn't the 2013 YZ250F have a carb? It's fine to run leaded fuel if you wish
Post a reply to: Severe engine damage from leaded fuel?