Dear Mr Kilmer，
I have a 2013 Toyota FJ Cruiser with roughly 200k km on the clock. Since the Province of Ontario is gradually rising the ethanol level in regular gas up to 15%，I wonder if the fuel system on my vehicle can safely handle it，despite Toyota said not to put anything with more than 10% of ethanol in the gas tank. I did some research and I came across a document regarding the engine facelift on post 2010 1GR-FE engines，which says they can mechanically handle up to E20 ethanol blended fuel，so I‘m wondering if that document determines E15 to be compatible with my vehicle. Thanks for your time.
Sincerely
should I conduct some proactive modifications on the fuel system of my FJ，lets say by replaceing O rings，rubber seals.etc？
Scotty does not usually return to topics he has already answered.
If the manufacturer of your vehicle states it is compatible with E15 fuel no modifications should be needed.
If your engine is not compatible with E15 you can expect that it will suffer long-term damage. Ethanol is corrosive to metal parts. (Your government of course does not care. They would prefer that your personal vehicle were destroyed and you rode the electric bus.)
@chucktobias Thank you for your answer，and you are right，the bloody government doesn't give a F on people who prefer to drive a reliable old car. Since the document that I came across says that the fuel system on my car can handle up to 20% ethanol with its coated surface and increased fuel pressure，I‘ll take it as an affirmation.
Well it should run fine with that. The only problem would be if you have any residual water in your gas tank already as it's an older vehicle adding 20% ethanol to it could make it run funky the first tank a little until the water is burnt after it mixed with the ethanol
@scottykilmer Appreciate your answer sir. By the way，should I conduct some proactive modifications on the fuel system of my FJ，lets say by replaceing O rings，rubber seals.etc？