I've been pondering the addition of an oil pressure gauge for some time. Before you say anything...not it is not going to be a)Indiglo, b) bright blue/red/green/pink, or c) mounted on the pillar next to a chrome fire extinguisher.
The easy way out for the Focus is a mechanical gauge, but I feel a bit uneasy about having oil coming into the interior of my car. Has anyone ever had any problems with oil leaking on a mechanical gauge? Hooking up an electric sending unit is a slight pain in the ass...but doable. Obviously this is more "failsafe", but I'm lazy and I like easy.