My old Tecumseh Premier 5 HP needed a new fuel line. The shop had Oregon 07-258, a yellow translucent line, feels like vinyl. Supposedly able to handle up to 30% ethanol blends. Local stations post that up to 10% ethanol may be added to the gasoline and I have had some problems with failed fuel system components on other equipment that I suspect are ethanol related. This Tecumseh routes the fuel line right under the engine cylinder and it gets hot there. I am concerned about the line melting while running and fire consuming the mower and perhaps causing injury to me. What do you know about this line and resistance to heat?