4.5-5 quarts on 2.8s with filter change, make sure to use a good 10w40 or 20w50 (10w40 for colder climates) oil as the factory fill would've been 20w40, 10w30 is a bit light for the solid lifter/roller rocker setup these cars had from the factory, and singleweight oils aren't a great idea in the fall/winter.
__________________ 1976 Ford Mustang II Ghia: 302 with a 600cfm Edelbrock carb, Edelbrock Performer 289 intake, Dynomax Blackjack headers, 2.5" exhaust with Flowmaster Super 44s. RJS 11-gallon fuel cell, C4 tranny, chrome 16" pony wheels, fuzzy dice, brown vinyl half-top, and painted in the tackiest color ever (harvest gold, that's why I call it "The Goldenrod").
Also have a 2003 Dodge Ram (lightly modded daily driver/tow rig/office/dining room/home away from home/workshop... I call it "The Big Blue Dawg".) | 
1977 Mustang II 2.8 Quick Oil Change Question 
