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I hate to say this, but I think the only permanent option is to purchase a metal tank. Not sure if there were any livery specific 1098 metal tanks, but both the 1198 Corse and the 1198SP were aluminum.
Absolutely, polymers are fantastic right up until the point they are not. Ask anyone who owns a modern BMW past 120K miles. The E53 X5 I have uses a different system design so hasnt been as bad. Same for the E90 3 series I had. The E39 5 series however, I always kept a spare expansion tank and hoses handy. Because it would fail. And while using hoses with plastic ends and o-rings sounds great, an o-ring that has been in place for 15K miles isnt going to reseal once you pull the hose off.Hi,
IMO, polymers are fantastic: in their place. For road bikes, plastic fuel tanks are not such a great idea. Eventually, they fail.
Sometimes we have to make concessions... it's not an ideal situation unfortunately. When we do get to design something from the ground up, and do it the right way, the result is frequently something amazing, and prohibitively expensive.One would think the design engineers would have thought about temperature changes affecting a plastic fuel tank
If I remember correctly back when I had my 848 EVO, I thought a popular solution to have the tank coated on the inside.
I always heard really good things about Caswell tank sealer. I'll temper that statement by saying that it is an "involved" process... do everything correctly, you've got yourself a sealed tank, regardless of the material it's made from. Do it incorrectly and you've got yourself a fuel tank sized paper weight, door stop, etc.I coated the tank and also always use non-ethanol fuel . I haven’t noticed any problems. I bought a spare tank but so far I haven’t had to use it. This is on an S4RS