Hello, I'm a new member with a '67 MGBGT that I've owned for 11 years. I've done a rolling restoration and use the car regularly. Recently I barely get any temperature indicated on the gauge. It's worked perfectly before so I thought the thermostat might have failed in the open position. It's been replaced but the gauge still barely registers. I'm figuring that the gauge has probably failed. there is an oily area along the capillary tube next to the block so I figure a leak. Does anyone have any other suggestions?