Or, rather than guessing and throwing parts at it, you could hook up a gauge and watch it. I bet it's an electrical issue. I have a friend with a da Gsr that does similar stuff
honestly, it sounds easier the other way. i dont have the tools for that. it might sound stupid, but its what it is.
as far as electrical? the switch provides a ground, that turns the light on? power is just standard shit provided to the cluster. so if i unplug the switch it would tell if there is a short somewhere. i did that, and no light came on. = no short?
maybe im an idiot and cant diagnose shit... good possibility.
I bet you have bunch of shit in the pan an after a while it clogs your pickup screen. Once you shut it off it it releases the suction on it and it all floats off it. You fire it back up and its ok for a few and then the cycle repeats itself.
might thoughts also. or the relieve valve is sticking wideopen, and bypassing all the oil?