oil pressure at idle

[PeterBergin at aol.com]

That's where mine reads once it is warmed up.  Used to be 4+  now  4 when 
oil temp gauge is up to normal and used to be 2 at idle and now  1.5.  Has 
been that way for two years, have used in Meile or Mann filters  and Mobile 
One 20/50 almost year round (Minnesota).  My pressure may have  dropped a 
little when I replace the leaky sending unit. My car has used about a  quart of 
oil every 1,500- 2k ever since I bought it and chipped it at 68k.   Never 
any smoke.
 
Pete 
91 Avant 238k