Motorcraft 10W30, 5W40, Rotella or Mobil 1 for 6.7

Didn't see it mentioned above-->> My 2012 says 10W-30 is not approved for BioDiesel from B6 - B20. That may have changed in recent years. But, 5W-40 full synthetic solves all the problems, so I just run that. Rotella now makes a T6 15W-40 oil, so don't confuse that with the 5W-40. Ford's spec is for 5W-40.

bpounds wrote:
The dealer is using what Ford specs for normal service. If you don't use the truck in normal service, it is up to you to tell the dealer that you need severe or extreme service oil. How is the dealer supposed to know unless you tell them. And of course, expect to pay extra for the upgraded oil.

My opinion, it doesn’t get any better than Mobil Delvac 1. It is specifically made for extended service, extreme diesel service. But, it’s a “pia” to get.....so I’m using Rotella synthetic for diesel applications.....very easy to get, doesn’t break the bank. memtb

Sport45 wrote:
2WD Fords still have serviceable front wheel bearings. I don’t know if GM and Ram have the same.

Ah, thank you, I did not know that! :)

2WD Fords still have serviceable front wheel bearings. I don’t know if GM and Ram have the same.

F5Pro wrote:
2011 F350 6.7. 10W 30 Motorcraft is listed oil for 20*-100*, 5W 40 for towing 1000 miles or severe duty-also Motorcraft. I went with the 5W 40 for this first change.
Next up is coolant flush, differential fluid and front wheel bearing repack, then fuel filters, air filter (maybe), trans filter and a possible serpentine kit with tensioner and idler changed along with new belt.

The front bearings are serviceable on that truck? I'm trying to remember, but I'm pretty sure that the ones on my 2003 F350 were sealed unit bearings as are the vast majority these days.

The dealer is using what Ford specs for normal service. If you don't use the truck in normal service, it is up to you to tell the dealer that you need severe or extreme service oil. How is the dealer supposed to know unless you tell them. And of course, expect to pay extra for the upgraded oil.

2011 F350 6.7. 10W 30 Motorcraft is listed oil for 20*-100*, 5W 40 for towing 1000 miles or severe duty-also Motorcraft. I went with the 5W 40 for this first change.
Next up is coolant flush, differential fluid and front wheel bearing repack, then fuel filters, air filter (maybe), trans filter and a possible serpentine kit with tensioner and idler changed along with new belt.

10W-30 CJ-4 oil is fine in the 6.7 Powerstroke for “Normal Service”.

Towing and hauling aren’t normal service though!

:):)

5-40 T6 on my 2015 just short of 100,000.

Ductape wrote:
I think it very unlikely a Ford dealer is offering to install the wrong oil in a PowerStroke. More likely something has been misunderstood or lost in translation.

I don't. I would bet it's what they have in bulk and make the most profit on. This is just one of the reasons why I do my own servicing. OP, I would go with what the manual says, and stick with synthetic; it will cost a few bucks more but well worth it especially if you plan on keeping the truck for a long time. I also only use OEM filters on all of my vehicles.