Out of topic, but i am really wondering why you post thousand threads in this section instead of one like others did.
Would of made sense to post in your other gauge thread, maybe mods could merge.
Back on topic if you search"fn2 mugen gauges" on YouTube there is a few videos of people showing them running, one where its shows on idle then reving not seen any driving but may help you out.
If not try Google or Wikipedia with FN2 oil pressure.
Failing that I'm sure tdi or cpl in the commercial sections would help you out.