22s check your rear diff!
Fleet Mechanic
Joined: Apr 2015
Posts: 1,641
Likes: 507
From: Phelan CA
Also, instead of pacing about and worrying if the oil is 1/32" below the fill plug, you'd far improve the life of the oil if you ditch the steel cover and install an aluminum with heat sink.
Lower oil operating temp means longer oil life and better lubrication properties
Lower oil operating temp means longer oil life and better lubrication properties
Mountain Pass
Joined: Feb 2011
Posts: 192
Likes: 30
From: Upstate NY
I haven’t scoured every inch of the 2022 manual, but all I have came across was the amount (3.6 quarts for the 10.8 axle) and the type. At least here it did not indicate a “level” it should be filled to. Regardless, I don’t feel concerned about the level in mine, and until I drain it and refill it I won’t know where that level is.
Lead Driver
Joined: May 2021
Posts: 5,836
Likes: 3,463
From: Uh oh, CA
Based on the picture above, that is about what mine was filled too. I don't see what would be different between the 2020 model and the 2022 model, but this is all I can find in my 2022 manual (again, I haven't scoured the entire thing).
Then, under the capacities and specifications, there is this:
This thread has certainly made me think about the diff fluids more than I did before, and I will likely drain and refill mine sometime soon, and then continue to do the same every 30k miles since we will be towing a lot. Then, after watching the YT video from Banks... that kind of makes me want to replace the cover too! lol...
Axle and Transfer Case MaintenanceAxle(s) and transfer case (4X4 only) fluid changes or level checks are not required unless a leak is suspected or the assembly has been submerged in water. During long periods of trailer towing with outside temperatures above 70°F (21°C) or at wide-open throttle for long periods above 45 mph (72 km/h), change the rear axle fluid every 30,000 mi (48,000 km) if the rear axle is filled with non-synthetic fluid. This interval can be waived and the 150,000 mi (240,000 km) service interval can continue if the rear axle is filled with 75W140 synthetic gear fluid meeting Ford
specification WSL-M2C192-A, part number XY-75W140-QL, or equivalent. Add friction modifier XL-3 (EST-M2C118-A) or equivalent for complete refill of Traction-Lok rear axles. See Capacities and Specifications (page 467).
specification WSL-M2C192-A, part number XY-75W140-QL, or equivalent. Add friction modifier XL-3 (EST-M2C118-A) or equivalent for complete refill of Traction-Lok rear axles. See Capacities and Specifications (page 467).
Rear Axle - 10.8 Capacities
Variant Quantity
All. 3.6 qt (3.42 L)
Materials
Name Specification
Motorcraft® SAE 75W-140 Synthetic Rear Axle Lubricant(U.S.)
Motorcraft® SAE 75W-140 Synthetic Rear Axle Lubricant / Lubrifiant synthétique pour pont arrière SAE 75W-140 Motorcraft®(Canada) XY-75W140-QL(U.S.)
CXY-75W140-1L(Canada)
WSL-M2C192-A
Variant Quantity
All. 3.6 qt (3.42 L)
Materials
Name Specification
Motorcraft® SAE 75W-140 Synthetic Rear Axle Lubricant(U.S.)
Motorcraft® SAE 75W-140 Synthetic Rear Axle Lubricant / Lubrifiant synthétique pour pont arrière SAE 75W-140 Motorcraft®(Canada) XY-75W140-QL(U.S.)
CXY-75W140-1L(Canada)
WSL-M2C192-A
Mountain Pass
Joined: May 2020
Posts: 204
Likes: 115
From: Zephyr Cove, NV
No. That's very close to the proper level. There are posts on this subject on a few different forums I've been following. A few people have drained and refilled the correct amount and the level ends up being a little below the fill plug hole. A couple millimeters overfilled is not going to matter if the graphic above is correct (10-15mm below the hole is proper).
Laughing Gas
Joined: Nov 2020
Posts: 774
Likes: 252
From: CNM
I guess it would be nice if there was something that could be used as a measuring tool to see how many mm below the hole the oil level is, so not just a pinky.
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Posting Guru
Joined: Feb 2018
Posts: 1,555
Likes: 516
Get a coat hanger. I guess I should say a metal wire coat hanger since someone will undoubtedly carp about how it doesn't work with plastic or wood. Put a 90-degree bend in a straight length. From the seat of the bend, measure down 10mm or roughly 3/8" and with a sharp object, like a knife or maybe even a screwdriver, put a register into the wire at that measured point. I would leave a little on the wire past the register so you can see where it would be low should something happen. Then cut off the rest. Now, you can remove the plug, insert your wire and see if the oil come up to the register. But, again, the oil isn't consumed, so unless you have a leak, it's not going anywhere.
Laughing Gas
Joined: Nov 2020
Posts: 774
Likes: 252
From: CNM
Get a coat hanger. I guess I should say a metal wire coat hanger since someone will undoubtedly carp about how it doesn't work with plastic or wood. Put a 90-degree bend in a straight length. From the seat of the bend, measure down 10mm or roughly 3/8" and with a sharp object, like a knife or maybe even a screwdriver, put a register into the wire at that measured point. I would leave a little on the wire past the register so you can see where it would be low should something happen. Then cut off the rest. Now, you can remove the plug, insert your wire and see if the oil come up to the register. But, again, the oil isn't consumed, so unless you have a leak, it's not going anywhere.
Yet another use for a coat hanger.
Thanks Rusty.
Hotshot
Joined: Jun 2003
Posts: 12,341
Likes: 4,366
From: SW VA
Also, instead of pacing about and worrying if the oil is 1/32" below the fill plug, you'd far improve the life of the oil if you ditch the steel cover and install an aluminum with heat sink.
Lower oil operating temp means longer oil life and better lubrication properties
Lower oil operating temp means longer oil life and better lubrication properties
Did my change at 25k miles. Filled the diff until fluid ran out of the fill hole...just like I've done all my life, and like my dad did all his life (a lifelong auto and heavy equipment mechanic). Some of ya'll worry too much
Laughing Gas
Joined: Jan 2022
Posts: 1,101
Likes: 503
It's one of those things that can be easily overlooked or nags in the back of your head until you confirm it's right. The big problem is that by the time you realize there's a problem, there's a serious problem and the warranty may be done.
Fleet Mechanic
Joined: Apr 2015
Posts: 1,641
Likes: 507
From: Phelan CA
Interesting note is that the gas trucks call for 80-90W and diesel is the 140 weight oil. Same axle.
Mountain Pass
Joined: Aug 2003
Posts: 211
Likes: 55
From: Montgomery, AL
I used brown cardboard cut into an "L" shape and measured off with a ruler. The level may have measured 7 - 8 mm instead of 10+ due to being absorbed up into the cardboard but it sure was easy to read.