Ethanol is corrosive in contact with rubber components like fuel lines, gaskets seals etc. Most modern vehs overcome this as they are manufactured using synthentics in the fuel lines which are resistant to modern fuel and fuel additives.
Personally I would not sweat it much but would avoid using fuel from the farm stores etc or ones advertsied as ethanol. The percentage of ethanol in most unleaded gasoline is less than 10%. Considering that you have mostly steel lines on mvs, the small bit of rubber is hardly woth the worry. If it bothers you, go to the auto supply store and get some neoprene fuel line and put your worries to rest...
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3RD Echelon Wksp
1968 M274A5 Mule Baifield USMC
1966 M274A2 Mule BMY USMC
1966 M274A2 Mule BMY USMC
1958 M274 Mule Willys US Army
1970 M38A1 CDN3 70-08715 1 CSR
1943 Converto Airborne Trailer
1983 M1009 CUCV
1957 Triumph TRW 500cc
RT-524, PRC-77s,
and trucks and stuff and more stuff and and.......
OMVA, MVPA, G503, Steel Soldiers
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