The engine was rebuilt in the mid 90's with new pump and timing chain. I only have the rallye dash oil gauge but it still shows good pressure. The lifters do quiet down after a few minutes but it tells me some of them are leaking down. I currently have the motor out of the car because my power steering box was leaking which I sent out for rebuild so I figured I would pull the the motor for easier access and while it was out detail it and perform some maintenance.