B787MECH wrote:
Well, like I say, my independent BMW mechanic agrees with me so I’d rather believe him,sorry!
Has a lot of sense to it, too many people use rubbish supermarket fuel. German petrol is made to a higher standard so it would be interesting to find out if German bikes are effected to to same extent.
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What your mechanic believes using super 98 stops the flap seizing, hmmm. Like I said, I always use 98 or higher and never use supermarket fuel, normal try BP or Shell. Had two failures and two new sets of headers on my 2014. My mate has just had a failure on his 1250, he only uses high octane fuel and only from non supermarket garages. We are having a flap replaced on one of our 1250 blood bikes after 3k miles again we have a BP fuel card, so non supermarket fuel. But maybe you are onto something
My 1250 flap on my own bike hasn't seized yet aft 6k, so it will be a good thing for me to look out for, although I do grease mine occasionally.