Hi Everyone, This is my first post and I am looking for help. I have a 1995 Z28 with a standard LT1 engine. A few months back it started overheating in traffic but would cool back down on the move, I traced the fault to a blown fuse in the fan circuit, great, no!. I then found that with a hot engine at idle the oil pressure dropped into the red and the check gauges light came on. First thoughts were to change the oil and filter, no change, then I thought I may have cooked the sender unit so I put it into a garage to put a manual gauge on it. The manual gauge showed 2 - 4 lb of pressure at idle and was low all the way up when the engine is hot. Off came the sump to check the oil pump and pick up pipe both fine, the garage found some wear on the crank bearing shells and suggested that this would be the cure, I gave them the go ahead and then got the call, No Change!!!!. I am now running with 15w 40 and a drilled thermostat to keep the pressure up, but it still falls to nothing when the engine warms up, has anyone come across this before? or have any idea what I should look at next. Thanks Paul