Hi All, I think we all would like the background to this one as oil lights are a serious event.
Any chance your bike has been on short trips and on one long hot trip the dissolved petrol in the sump evaporated out, being re burnt in the motor and low oil then in the sump?
With the TPS issue resulting in higher fuel use and only 2 rings used on pistons today, it may be a reason as good as any for artificially holding the oil at a reasonable working level.
I had a Yam XJR1200 once that shares a design fault with the FJ1200 in that the oil sensor was flat paddle and if the oil level dropped slightly below the bottom level mark (when cold), the oil light would come on rounding the first corner. The bike was fine.