I have owned this truck about 2 years, 74 F250 Camper spcl 390 auto.
According to my dip stick 4 quarts is full this includes the filter change. Seems strange that this is all the oil capacity the motor has, but pressure has always been good with no lifter ticks. This really botherd me when I first got the truck but have gotten used to it, Just wondering what other 390's are taking. My Haynes book says 6 Qt, think if I put all that in she would be blowing out the stick. Also back when I first got the rig whent to the FORD dealer but the stick and tube are no longer available. Had a similar deal with my 76 300, but the dealer was able to get a new stick and it was diff then the one in when I got that truck.

Any thoughts on this one??

Bob L