What can I do to protect the fuel lines on my Ranger XLT? Squirrels have chewed through the fuel lines. With billions of acorns on my lawn, they are attracted to the fuel lines. This is the second vehicle they have done this to in a year. Do they make a metal fuel line that can't be chewed through. Any deterrents I can use to prevent their interests, and any advice would be greatly appreciated. They have done so much damage on my property.