Ford Super Duty Owner's Manual

^ Poor sucker that buys a 200k mile truck not properly maintained is the guy who looses here.
I haven’t understood the “lifetime full” recommendations. But I also don’t read where it’s lifetime fluid. Although wouldn’t be surprised necessarily. Sons 06 mustang is supposedly lifetime gear lube though.

agesilaus wrote:

My differential (front/rear) fluid is still the factory lube so it probably needs to be changed although I believe the manual says it's doesn't ever need to be changed.

Really? Mine was 125,000 I believe. Like the transmission and transfer cases. If you have a 2012 I'd double check that since that's what I have.

Manual wrote:
Every 15000 miles
(24000 km)
Inspect engine and secondary cooling system
concentration (freeze-point protection), additive
strength (corrosion inhibitor), coolant level and hoses. 2
Every 22500 miles
(36000 km)
Replace engine- and frame-mounted fuel filters. 3
Every 30000 miles
(48000 km)
Replace climate-controlled seat filter (if equipped).
At 45000 miles
(72000 km)
Replace air inlet foam filter. 4
Every 60000 miles
(96000 km)
Replace front wheel bearing grease and grease seal if
non-sealed bearings are used (2WD vehicles).
At 90000 miles
(144000 km)
Inspect accessory drive belt(s). 5
At 100000 miles
(160000 km)
Change rear axle fluid (Dana axles. Refer to Special
operating conditions). 6
At 105000 miles
(168000 km)
Change engine coolant. and secondary coolant. 7
Every
150000 miles
(240000 km)
Change automatic transmission fluid and filter. Consult
dealer for requirements.
Change front axle fluid (4WD vehicle).
Change transfer case fluid (4WD vehicles).
Replace accessory drive belt(s) if not replaced within
the last 100000 miles (160000 km).
Replace front wheel bearings and seals if non-sealed
bearings are used (2WD vehicles).

If you have a Dana rear axle which comes on a DRW F350 you have to change the fluid but on a F250/F350 SRW comes with the Ford rear axle which doesn't require a fluid change. I'm going to need to have my serpentine belt replaced so I will probably have the Ford dealer change the fluids in the front and rear axles. Having said that I usually inspect them for leaks when a change the engine oil and both of them are bone dry.

I'm on my second Super Duty with ~200k miles with the factory lube in the axles.

GDS-3950BH wrote:
So do I LOL.

Perhaps it's not as intriguing as the threads were folks discuss state park campgrounds that will be installing EV charging at all the campsites which in reality may happen @ 2089, or the one about proper procedure to sanitize a black tank, but its a close 2nd.

DITTO.
I just saw those two threads this morning.

Apparently people are really getting bad cases of cabin fever this winter based on some of the bizarre and strange topics recently.

4x4ord wrote:
Anybody come across anything interesting reading your owner's manual?

At this point, my 2008 F250 Super Duty is an oldster, but Yes, reading the owner's manual is interesting.

I found out how to stop all the lights from coming on whenever you unlock the doors... sounds like a nice convenience thing, but at at campground if you go out to the truck to get something at 11pm suddenly you light everyone up!

On my 1988 F150, I found the emergency fuel pump shut off - the truck was jostled or something at a jobsite and wouldn't start. For some reason I remembered actually reading the owner's manual and remembered something about a fuel shutoff in case of an impact - found it under the dash. My employees thought I was crazy until the I got the truck started.

These instances were on older trucks... the newest ones have so much on them that is impressive.

I think most people would be amazed if they actually read the owner's manual for the their vehicle.

Grit dog wrote:


I find it intriguing that this is actually a thread with a question and discussion points.....

So do I LOL.

Perhaps it's not as intriguing as the threads were folks discuss state park campgrounds that will be installing EV charging at all the campsites which in reality may happen @ 2089, or the one about proper procedure to sanitize a black tank, but its a close 2nd.

MFL wrote:
Disconnecting the battery requires more computer learning, and supposedly engine will not start,

HD Diesel trucks with two batteries don't need to "relearn" unless you disconnect both batteries at the same time, which I don't do. I replace one at a time. I'm not sure if that's the recommend procedure in the manual or not, because I don't have time to RTFM.

Lynnmor wrote:

Grit dog wrote:

Lynnmor wrote:

4x4ord wrote:
Anybody come across anything interesting reading your owner's manual?

I find it interesting that you are to oil the lug nuts a certain way, do you know of anyone that ever does it and does it right?

To the chagrin of the rvnet lug nut torque police, I’ve been using anti seize on all wheel lugs for a good 30 years now....

You obviously never read a Ford truck owners manual or you would know that we Ford owners have better nuts.

You are a Ford guy??

My differential (front/rear) fluid is still the factory lube so it probably needs to be changed although I believe the manual says it's doesn't ever need to be changed.

Really? Mine was 125,000 I believe. Like the transmission and transfer cases. If you have a 2012 I'd double check that since that's what I have.

Manual wrote:
Every 15000 miles
(24000 km)
Inspect engine and secondary cooling system
concentration (freeze-point protection), additive
strength (corrosion inhibitor), coolant level and hoses. 2
Every 22500 miles
(36000 km)
Replace engine- and frame-mounted fuel filters. 3
Every 30000 miles
(48000 km)
Replace climate-controlled seat filter (if equipped).
At 45000 miles
(72000 km)
Replace air inlet foam filter. 4
Every 60000 miles
(96000 km)
Replace front wheel bearing grease and grease seal if
non-sealed bearings are used (2WD vehicles).
At 90000 miles
(144000 km)
Inspect accessory drive belt(s). 5
At 100000 miles
(160000 km)
Change rear axle fluid (Dana axles. Refer to Special
operating conditions). 6
At 105000 miles
(168000 km)
Change engine coolant. and secondary coolant. 7
Every
150000 miles
(240000 km)
Change automatic transmission fluid and filter. Consult
dealer for requirements.
Change front axle fluid (4WD vehicle).
Change transfer case fluid (4WD vehicles).
Replace accessory drive belt(s) if not replaced within
the last 100000 miles (160000 km).
Replace front wheel bearings and seals if non-sealed
bearings are used (2WD vehicles).

agesilaus wrote:

Ford doesn't make the orange coolant anymore and the yellow coolant is backwards compatible. Meaning you can mix the yellow with the orange. I don't believe Ford sells a booster for the yellow since it already last extremely long. The OP is purchasing a new 2021 Super Duty so it will come with Yellow coolant so the orange coolant is no longer a issue.

That's good info since coolant is the next fluid change on my list, I've done trans, differential and transfer cases. All easier than I expected

My differential (front/rear) fluid is still the factory lube so it probably needs to be changed although I believe the manual says it's doesn't ever need to be changed.