[SoonerTundra]

I have noticed for the past week or so that my oil pressure gauges goes up and down while driving.. I never noticed it before (wasn't looking) but I was wondering if anyone else has noticed this.. Idling it sits a little below half and when given gas it goes past half almost 3/4 of the way to the other line.. I changed my own oil and put in 7.5 quarts 5w20 Castrol.. Any answers or comments would be appreciated.. Thanks!