Classic signs Road runner!
I have had exactly the same symptons.Once the oil gets hot the oil pressure light "glows". Once you rev the the bike it goes out. An oil pressure switch will cost you about £20 ( I know I bought one last week!) If your switch has gone,once you take the right hand fairing off, you will probably see a lot of oil on the engine casings. Depending on what year/model you have will depend on whether you need a washer or not. (late ones did). Dont rely on the Haynes manual because it says they all need a washer!
Dont forget, only "nip" it tight if its a ally casing!!!
If you need any extra help, u2u me.
Good luck,its easy.
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