I had a Dodge that did that, if you only put 4 qt. in at the oil change, that is what you had at the next oil change.
Put the five quarts and new filter, then check it every week to see how long it takes to get to the add mark. the old Dodge would run it out in 3 weeks of city driving and about 8 hours on the highway.
White 2002 Ranger XLT Extended Cab 4.0 4x4 4.10 LS
K&N CAI 77-2529KP
2 1/4" Exhaust
Explorer Dome Light
IN THE WORKS:
Sable Electric Fan
“If you do not know where you are going, every road will get you nowhere.”