I drive a 1999.5 f-350 4-door, longbed, lifted, 7.3l diesel truck. 276,000 miles and ticking away.
-I change mine around every 7,500 miles give or take. At the same time I clean my K&N air filter, rotate my tires, and change the primary fuel filter. Generally costs me around $120-$130 to do all this myself. My truck takes 15 quarts of oil and I generally buy an extra 5quart container just to have. I use Ford Motorcraft for my truck.
-Same procedure for my dads f-350, I even do it for him.
-My 1968 Nova, 8.2 liter Big Block gets changed every 1500 miles :). However, it isn't exactly your daily driver.
-My dads 1968 Camaro gets its oil change every 500 miles with valvoline VR1 Racing oil.