<< <<All of my cars have had their oil changed at between 5000 and 6000 miles. My old Mazda is still on the road with 160,000 miles.>>
Only 160,000 miles? That's nothing. 🙂 203,600 miles and climbing for my Accord. The only replacements have been the alternator and water pump at 193,000 miles (both were original), and the A/C condensor (also original) at 197,000 miles. I change the oil religiously at 3,000 miles, and despite the fact that everything inside my engine is nearly 14 years old with 203,600 miles of wear on it, the car still gets 30 mpg and does not burn a drop of oil. Marketing gimmick or not, I'm not about to increase my oil change interval.
ZV >>
Fine, it's your money... feel free to waste it every 3000 miles.
BTW, it's a 97 Mazda 626 I bought in early 98. Having my stores located in many different towns kinda sucks for a car 😉 I figured I'd run it into the ground instead of my new Passat. My girlfriend has it now, and it still runs great.