Assuming the warning light is working normally, it not coming on with the engine running means there isn't zero oil pressure. Which makes the gauges suspect.
Dave
London SW
Rover SD1 VDP EFI
MegaSquirt2 V3
EDIS8
Tech Edge 2Y
I agree Dave, I'll probably need another gauge soon. However, the definitive zero reading came from my mechanic's diagnostic pressure gauge. The engine's been in need of a rebuild for a while so I've decided to go for that. I'll post the findings on here.
Cheers,
Tim.