10 w 30

when I rebuilt my 440 in 83 it would go 100 cold and 85 or more hot at 2000. at the end of the 1/4 many years later would like over and always see 110 never hurt anything street or strip.

In 2006 I put a Big milodon pump on and then an adjustable oil presssure regulator and now have it set so cold 2000 is 75 and hot 2000 is 75 and 7000 rpm is still 75.
http://chucker54.stores.yahoo.net/milbrbadregk.html

don't over think it just be happy you have good pressure!