As was I. You don't read either, as I was saying that changing oil at the first 1,000 miles was needed 40 years ago not now. I never wrote that oil changes are needed every 1000 miles.
If I were just driving normally I might extend the time between oil changes. However, the owners manual says to change oil at 5k intervals if the use is severe. About 40% of my driving is towing, I consider that severe use. Therefore I change at 5k miles.
That makes good sense to me. If I towed a lot, I would definitely shorten my normal oil change cycle. Most of my miles are ran with me babying the truck along at less than 1500rpms. I usually change my oil in my F150 at 20% of oil life left.
My understanding of the oil life indicator is it does, in fact, take into account towing.
I don't know if it does or doesn't. I'm not going to take that chance.
My Corvette had an oil life indicator and it would show oil change needed with around 1500 miles but a year's time had elapsed. Figure the Ford system is the same.
Ford says, at a minimum, the oil should be changed at least once a year.
Does that logic apply to seat belt minders, putting itself in park, auto park brake, hands on wheel, watch the road, need a coffee break, can't input nav or certain settings while moving, traction control not totally defeatable, skip shift transmission programming, remote start limits, I'm sure there are a bunch more.
I follow Ford guidelines from the Owner's Manual. It says to change oil every 5K miles if it's subject to severe use. I consider 40% towing falls under severe usage.
