Frequency of Oil Change in new 6.7liter - Page 3 - Diesel Forum - TheDieselStop.com
6.7L Power Stroke Engine and Drivetrain Discussion of the 6.7L Power Stroke diesel engine and drivetrain in the 2011-Up Super Duty trucks. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 6.7L Power Stroke engine.

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post #31 of 38 (permalink) Old 12-14-2017, 06:38 AM
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With regard to warranty your maintenance is typically only called into question then there is a major failure and there are obvious signs of neglect. Some technicians like myself know the pattern failures for each engine and usually do not look too much further into the failure unless something stands out. I do look at mileage, total engine hours and the general condition of the engine.

None of the maintenance minders log data or set codes. There is nothing that can be pulled from the truck to tell nor does the truck actually know whether the oil has been changed. Ford put effort into the algorithms that determine oil condition based on a lot of testing. The duration of the interval between oil changes is calculated in the PCM, and varies due to driving conditions. The PCM assumes a base mileage of 16,093 km (10,000 miles) or 1 year for normal driving. However, this number will be adjusted down due to high engine temperature, high engine rpms, use of flex fuel and possibly low oil level depending on the vehicle. From what I understand total engine hours and idle hours are also factored in. Otherwise I recommend changing the engine oil and filter every 7500 miles or 300 total engine hours for the 6.7L and 5,000 miles or 200 total engine hours for the 7.3L, 6.0L and 6.4L PSD engines for my location.

Synthetic oil is proven to be superior to conventional oil and will provide better lubrication however I do not think that using synthetic lubricants means that you should extend your service intervals. The oil still becomes contaminated and the filter still gets loaded up regardless of the type of oil being used. Of all the PSD engines I have had apart for whatever reason engine wear seems to be excellent when looking at cylinder walls and bearings and most of these engines used conventional diesel engine oil. In fact, most engine wear and related damage on PSD engines in my experience is caused by other problems like air filtration failures (think 7.3L) and over fueling due to excessive injection compensation or oil consumption caused by elevated engine oil levels (think 6.4L) as my top two examples that cause excessive cylinder wear and damage. I could go on with citing additional pattern failures and customer induced stupidity (think modifications and neglect) but I do not want to digress to far here. After all, this topic is about oil maintenance.


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post #32 of 38 (permalink) Old 02-23-2018, 06:55 AM
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ford motor oil

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Originally Posted by mossrock98 View Post
I will use Motorcraft as I did in my 7.3 and 6.0.
I think Ford has a vested interest in the oil as they are the ones on the hook for the 5 year/100,000 warranty.
As their slogan use to be "The Motor Oil From The Motor Company"
Ford does NOT make or produce any motor oil or lube !
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post #33 of 38 (permalink) Old 02-23-2018, 09:15 PM
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I got over 250K miles using Motorcraft Oil in my 7.3 and since Ford is marketing it and I drive a 6.7 Ford now, I will continue to use Motorcraft Oil.

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post #34 of 38 (permalink) Old 02-23-2018, 11:45 PM
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As was pointed out, Ford is not an oil producer/refiner, they simply market on a private label basis (called Motorcraft) oil producer by Exxon Mobil. The full synthetic Motorcraft oil is Mobil 1, I've been told.
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post #35 of 38 (permalink) Old 02-24-2018, 07:18 AM
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As was pointed out, Ford is not an oil producer/refiner, they simply market on a private label basis (called Motorcraft) oil producer by Exxon Mobil. The full synthetic Motorcraft oil is Mobil 1, I've been told.
My point is, if it's good enough for Ford to market it as their brand, it's good enough for me. It seems this discussion has wandered a bit off track however. Wasn't this about oil change frequency?

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post #36 of 38 (permalink) Old 02-24-2018, 09:08 AM
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Originally Posted by VermontWayne View Post
As was pointed out, Ford is not an oil producer/refiner, they simply market on a private label basis (called Motorcraft) oil producer by Exxon Mobil. The full synthetic Motorcraft oil is Mobil 1, I've been told.
Motorcraft oil is made by Conoco Phillips.
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post #37 of 38 (permalink) Old 02-25-2018, 08:50 PM
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Dirty looking oil means that the detergents in the oil are doing their job & keeping particles suspended in the oil until the next change. Dirty looking oil is just fine as long as maintenance intervals are followed.

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post #38 of 38 (permalink) Old 03-02-2018, 12:50 PM
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I go 5000 miles on a change.
I'm not listening to the "oil minder".
21lbs of boost is hard on oil.
50% of my mileage is towing 17,000lbs.

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