What is the difference to the Man-a-fre tank? And why doesn't it fit American spec vehicles? Kyle Relleen 23 April 2020 11:29 Updated Follow Our Auxiliary Fuel Tanks are not approved for US vehicle, due to strict regulations. Our Auxiliary Fuel Tanks are only sold for RSA vehicles. Front Runner team This question is about: Toyota FJ Cruiser (2006-Current) Auxiliary 85l Fuel Tank - by Front Runner (FTTJ001) Comments 0 comments Article is closed for comments.