Well, I played with it and discovered that there was an air leak in the system (the black rubber feeder thing I suspect), and so faced the inevitable and got a replacement RMV, so the whole WD40 issue will not be tested.
Having spent well over 2 hours fiddling with it, I have to say that I have developed a deep distaste for Scottoiler and sadly wish the bike had not actually come with it.... I have learned a lesson for the future.
How can such a simple device be so poorly engineered??? The whole Magnum touring capacity reservoir is an engineering joke! Two separate reservoirs because the designers couldn't be bothered to design one that fitted behind a number plate??? Allowing at least three new points where the system can fail.
A priming setting which is really "Max" rather than prime? Is it that hard to have an additional setting which opens the system fully? I spent 30 minutes squeezing my hands to death (it was -1C) to get the bloody thing to finally come out the other end. And this bleeding overpriced yellow bottle with the stupid tube on it - honestly guys, is that the best you can do? It pops out at pressure higher than ducks breath and sprays stupid blue oil EVERYWHERE.
And how can an 18 month old feeder tube thing be deteriorated enough to not fit properly? this means the system lasts less than the oil it contains! Insane.
I shudder to think how this little company can survive. For 1.5x the money I spent buying their stupid plastic cylinder with a vacuum valve, the man from Shenzhen has delivered me a fully functioning GPS system. That I think is the scary thing.
Phew. Rant over. Thanks for all your help, and apologies for venting...