I have tried magnets and got little to no effect. since I have magnets lying around. I thought I would revisit this. I believe most magnets being sold on the market are made with opposite poles attracting when installed. I think the 'right' way of installation is both south poles to be installed thus creating an opposing force to each other. Since I have them laying round might as well try it. No harm as i got the magnets free from a dead starter motor.
It'll be going into a 97 civic manual.
https://www.allmagnetics.com/catalog/gassaver.pdf