10,000 Oil change interval.

Mark Lally

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I decided to test what I already knew to be true, that modern engines with modern oils can go much longer between oil changes than engines of the past.

Many on this site and on most other forums still claim the Ford recommended 10K oil change interval is foolish. Being a hardcore gearhead and a former Ford mechanic, I know that oil technology and engine technology has made great strides in the last few decades, and I feel the 3-5K mile oil changes are a waste of money and an environmental irresponsibility in my view.

The tolerances of todays engines and the great efforts made in friction reduction, emission and fuel controls have payed great dividends in oil life. I've noticed that the oil in my modern Ford's is cleaner at 10,000 miles than the oil was in my 70's and 80's Fords at 1000 miles.

As the oil analysis report shows, everything is A-okay after a 9800 mile oil change interval. The report says that potassium is higher than would be expected, which could indicate coolant consumption (or nothing at all). I'll go with "nothing at all" at this point, given I haven't added an ounce of coolant in to 40,000 miles I've driven the truck and it still indicated full.

Let the flaming commence.





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LoneRNGR

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MrAnalog

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Samsquanch

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Looks good I don’t think anyone would be upset by that report. On my 3.5 expedition I thought about starting to go full synthetic and push to 10k from now on, sitting at 68k currently. I just feel weird about running that long on it knowing I want to keep the truck til it rusts away. Changing that motorcraft oil at 5000 or so just seems like cheap insurance to me.

I have a feeling in a few years we might see 15k or maybe even 20k intervals which seems insane.
 

Leftcoast

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Looks good I don’t think anyone would be upset by that report. On my 3.5 expedition I thought about starting to go full synthetic and push to 10k from now on, sitting at 68k currently. I just feel weird about running that long on it knowing I want to keep the truck til it rusts away. Changing that motorcraft oil at 5000 or so just seems like cheap insurance to me.

I have a feeling in a few years we might see 15k or maybe even 20k intervals which seems insane.
Big rigs are already pushing 25k and they're diesel.
 

Rinn69

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My warning came on at exactly one year, ~2000 miles
Mine did the same a few days ago just shy of 1 year. About 6500 miles since the last oil change.
 

F150stxguy

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I don’t have a 2.3 - yet - but I do have an ecoboost 2.7. Maybe, MAYBE if I was back home in the north east and doing my normal home to work commute of 55 miles one way, on nice smooth county roads, I did 8500 oil change intervals…….maybe I would give 10k a try.
But where I am now, it’s rough roads, extremely high heat, desert wind with sand, lots of stop and go, aggressive driving - no f’ing way would I give 10k a try. I do 3 to 5 k now.

Your oil change interval should definitely be based on your environment and driving habits. IMO.

Plus I always use Motorcraft semi synthetic with the specified weight. I’m sure there’s better oils out there, but I’ve never had any issues with Ford’s brand from ConocoPhillips.

With that being said, there’s a guy with an early 2.7 F150 who’s pushing 500,000 miles with basically zero issues other than a water pump and a sensor. It’s documented on the F150 forum with a thread dedicated to the man’s exploits. Moral of the story, he does 10k oil change intervals, and he has the Ford quick lane do his oil changes, which is Motorcraft (from what’s said on that thread). So I dunno. I guess that points to his massive amounts of highway driving.
 

GitRDone

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I'm also impressed with the extended oil change intervals of today's modern engines and oils , but I will still do mine at 5k. Because, turbo. In my locale, the brutal summer Fla heat and towing add additional stresses the vehicle's computer may not be factoring in. Changing the oil at more conservative intervals makes sense for my needs, and I don't view it as an environmentally wasteful as the oil is recycled.
 

FloggingBishop

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I got a call from my dealership last week saying we see that you’re putting quite a few kilometres on your truck since you bought it, it about time for your first oil change. My odo is at 11,482KM (kilometres!!!!), so only thing I can think of is because it’s the first one and maybe they want to see if the motor is giving itself a hot super? To see if I have voided warranty and they can get out of it? To try and get me to void the warranty by not doing the oil changes? Also how did they know my km’s? I know the truck talks to the mothership but is that sent to the dealer somehow????? Also Ford pass says estimated oil change in July, with 4600km (31%) oil life left, so why’s the dealer telling me I should have it done? Because I put all but 136km on since December 14/2020???
 

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