Anybody know what the oil light threshold pressure is? I can locally get a 30 psi or 15-50 psi pressure switch but not having the original kind of working in the dark. The service manual mentions not going below 35 psi while bleeding the system so that is kind of a start. Getting closer on my re-engine project with a Kohler CH1000. Running and driving, have to get the instrument panel set-up. Just trying to undo the various short cuts taken on this skid steer. Thanks!