it's lovely, both yamaha-y and oily. i've got 2 rotary instruments now, a flugel and a trumpet, both chinese, both feel like their rotaries were smeared with jam before i got them, but a couple of drops of this has made a big difference and made both hooters usable. i'm not saying this is the best oil in the world, but it's a 'named' product - yamaha seem to know what they're doing - and it was easy to get hold of and not too expensive, so i'm happy to use it and be recognised as a yamaha endorsee - i'm sure yamaha will be thrilled.
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