I've had these in my car for many years. For the last 3 years my car has sat unused because of engine build. Because of this,these pumps sat in 5 gallons of E85 that was in my tank when I removed the engine. I'm now up and running and the pumps and fuel filter are working as they did 3 years ago. I never even inspected them. I also use the original (including the original rubber sections) supply and return lines. Because I run E85,I need 30% more fuel. These pumps move a lot of fuel and have a long history of reliability. My car has 177,000 miles on the odometer. I know,E85 is very corrosive,Red's pumps aren't rated for E85,a paper filter is a no no with E85,you must replace E85 with gasoline during long periods of non use,and E85 will eat the original rubber hoses.
Ahhhhh! the things we absolutely know that are absolutely not so.