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I would say towing 10k all the time counts as heavy service according to the manual. I'd say change now and @ 5000 from here on out if you are towing all the time. That's what the manual says if I remember correctly.
There is no such thing as a break in oil used in new engines now days. Years ago, one would use a non-detergent oil for 500-1000 miles and then change it. You can safely run the initial oil till the required oil change mileage. I would suggest going with the 5w40 synthetic oil since you are towing.
Even with that said, many will change oil the first time with less than 5000 miles. It is a matter of your own personal preferences.
Did the first change on my 2015 yesterday at 5020m. I just follow FORD's severe duty schedule since I am towing about 90% of the time.
In today world of computer aided machining the tolerances are so close there is no need for break in, simply not required any longer by any modern company.
In the old days it was needed because the tolerances were not lose, but rather than were not consistent, some too tight, some too lose, so you needed a break in to keep from scoring and overheating the too close tolerances. Especially in the piston rings where to tight meant high friction and you could easily break rings. Car companies would not apt to warranty broken rings under about 1500 mi.
I did not want a ticky motor so It was set in my mind to change out the oil before 500 miles. I stayed with the 10/30 because ill change it way before the monitor will tell me to. I'm crazy like that. Maybe a waste and maybe not
The logic in me still remains though. There simply is no concrete reason to change the oil in these motors until the computer tells you to. There is no break in, they don't make oil, whether they work hard or not there isn't any real difference.
I'm not interested in changing anyone, just throwing this out there in case anyone is trying to decide what to do. I will not do 5k intervals mainly because I drive so much I would only use the oil for 3-4 weeks. That's a lot of oil changes in a year and it gets real expensive.
If I didn't drive much, like 15,000 per year I would probably change the oil every 6 months just because of seasonal changes (pollen in the south for one).
The logic in me still remains though. There simply is no concrete reason to change the oil in these motors until the computer tells you to. There is no break in, they don't make oil, whether they work hard or not there isn't any real difference.
I'm not interested in changing anyone, just throwing this out there in case anyone is trying to decide what to do. I will not do 5k intervals mainly because I drive so much I would only use the oil for 3-4 weeks. That's a lot of oil changes in a year and it gets real expensive.
If I didn't drive much, like 15,000 per year I would probably change the oil every 6 months just because of seasonal changes (pollen in the south for one).
The logic in me still remains though. There simply is no concrete reason to change the oil in these motors until the computer tells you to. There is no break in, they don't make oil, whether they work hard or not there isn't any real difference.
I'm not interested in changing anyone, just throwing this out there in case anyone is trying to decide what to do. I will not do 5k intervals mainly because I drive so much I would only use the oil for 3-4 weeks. That's a lot of oil changes in a year and it gets real expensive.
If I didn't drive much, like 15,000 per year I would probably change the oil every 6 months just because of seasonal changes (pollen in the south for one).
X2
I've been at it for a long time, in my racing days I changed oil every Monday after racing on weekends, other than that it was every 3000 mi and ALWAYS changing the filter.
The ranch truck: Never changed oil in it, why, we added enough we were changing it as we drove. The old babbitted bearings were worthless, pistons prob changed holes every other rpm, but that HD 3500 Chevy chugged along without fail till we finally sold it in '75 for more than it cost, sure which dad had kept it. For oil, we used the oil I changed out of my Corvette to put in the old truck, worked fine.
My Z06 Corvette pumping out over 500 ponies, Chev says change oil every 15,000 mi to keep it in warranty, WARRANTY! Chev also has a severe service (race) schedule and IIRC its 10,000 miles and there is no break in procedure.
Todays oils and engines are far far superior to those many of us grew up with.
Its your truck and your comfort zone so do as you chose, but I, others and the automakers will tell you you are not accomplishing anything other than throwing money away and it does not make your warranty any better...