- First Name
- Mathieu
- Joined
- Sep 15, 2022
- Threads
- 9
- Messages
- 954
- Reaction score
- 1,843
- Location
- Vassar, MI
- Vehicle(s)
- 2022 Maverick XLT FX4, 1992 Corvette 6-speed
- Engine
- 2.0L EcoBoost
- Thread starter
- #1
My 2022 FX4 + 4K just rolled 50k miles over the weekend. I bought this truck new in November 2022. It is my daily and I must say I'm still very happy with it!
In the wintertime, I tow a two-place snowmobile trailer most weekends. In the summer, I rarely tow but I will do some occasional light off roading and blast down the forest service trails near me. I just moved and my work commute round trip has gone from about 5 miles to 45 miles. However, this new commute is about 95% two-lane 55 MPH state trunkline road, flat as a board in the Thumb of Michigan. Usually twice a week I give the truck the ole Italian Tune-up on the sparsely populated roads out here, or when I jump onto I-75.
I do all of my own servicing and work on all my vehicles and toys. In October 2024 I performed the 25k mile service on this truck. Overall, this 50k mile service went very smooth and took me around 4 hours total (but I'm not trying to race to get things done). This service included engine oil change w/filter, transmission fluid drain and fill, PTU drain and fill, RDU drain and fill, engine air filter change, cabin air filter change, and new spark plugs.
Engine Oil: Nothing to note here really. I do 5k mile intervals and this was as normal as the sun rising every morning...
Transmission fluid: Apparently there is a shortage of Mercon ULV right now but I was able to get 6 quarts on Rockauto. Drained fluid, it was pretty much black (and mind you, there was only 25k miles on that fluid). Did not measure how much came out. Removed the airbox and vent, which I'm sure a few of you on here have seen me be a proponent of this method. It's really the only easy way to fill the transmission, and it literally takes 2 minutes to get the airbox out and a tranmssion funnel into the vent port. See below... easy!
Filled with 5 quarts of ULV, threw the airbox back in, and went for 10 minute drive. Returned to driveway, removed drivers-front wheel, then removed the leveling plug (it is a 10mm hex drive). IMPORTANT: measure up to a trim line before jacking the truck up and removing the wheel, as you have to lower the jack back to that height after removing the wheel to set the truck at normal ride height. With plug removed, no fluid was coming out while the truck was running. I pulled the airbox back out and added just over a half-quart. Removed leveling plug and I now had a small stream of fluid coming out of the transmission. I let the stream trickle down then reinstalled the plug. So overall, I refilled the transmission with 5.5 quarts of ULV.
PTU: This oil literally looked brand new. I was very surprised. Drained then refilled and got about 13-14 fluid ounces into the unit before spilling out of the fill hole. Drain plug is a 3/8" square drive, fill plug is an 8mm hex drive. In the pic below, you'll see the swipe on the paper is very clean. I did have some particulate on the magnet of the drain plug though, shown on the towel.
RDU: This oil surprisingly also looked almost new. Drained and refilled and got about 28 fluid ounces before spilling. Both the drain and fill plugs are 3/8" square drive. Same as the PTU, oil swipe below is pretty clean but there was particulate to wipe off the drain plug magnet.
Engine air filter: Went with a Wix again like last time. I thought it was going to be dirtier, but for $11 I'll just throw a new one in.
Cabin air filter: Also went with another Wix. Definitely was time to change it!
Spark plugs: Replaced with NGK Iridiums. I'm an NGK guy from my experience with snowmobiles, jet skis, and other two-stroke small engines. Never have issues with them. The gaps on the original plugs were more or less all at 0.032". Honestly, these plugs look fine (other than the discoloration on the insulator) and would probably last me many more miles. But like the filters, for a nominally small price, I will replace them ($22 for the set of four). Gapped the new NGKs to 0.028". I am keeping the old plugs on the shelf as they look acceptable still.
Just thought I'd do a little write-up as to my findings on this service. Overall, there was nothing I saw that was out of the ordinary. No oil leaks on the block, no leaks on the transmission or other driveline components. Even with the salty Michigan winters, I think it's been holding up very well. My garage foreman also agrees and was a great help today
In the wintertime, I tow a two-place snowmobile trailer most weekends. In the summer, I rarely tow but I will do some occasional light off roading and blast down the forest service trails near me. I just moved and my work commute round trip has gone from about 5 miles to 45 miles. However, this new commute is about 95% two-lane 55 MPH state trunkline road, flat as a board in the Thumb of Michigan. Usually twice a week I give the truck the ole Italian Tune-up on the sparsely populated roads out here, or when I jump onto I-75.
I do all of my own servicing and work on all my vehicles and toys. In October 2024 I performed the 25k mile service on this truck. Overall, this 50k mile service went very smooth and took me around 4 hours total (but I'm not trying to race to get things done). This service included engine oil change w/filter, transmission fluid drain and fill, PTU drain and fill, RDU drain and fill, engine air filter change, cabin air filter change, and new spark plugs.
Engine Oil: Nothing to note here really. I do 5k mile intervals and this was as normal as the sun rising every morning...
Transmission fluid: Apparently there is a shortage of Mercon ULV right now but I was able to get 6 quarts on Rockauto. Drained fluid, it was pretty much black (and mind you, there was only 25k miles on that fluid). Did not measure how much came out. Removed the airbox and vent, which I'm sure a few of you on here have seen me be a proponent of this method. It's really the only easy way to fill the transmission, and it literally takes 2 minutes to get the airbox out and a tranmssion funnel into the vent port. See below... easy!
Filled with 5 quarts of ULV, threw the airbox back in, and went for 10 minute drive. Returned to driveway, removed drivers-front wheel, then removed the leveling plug (it is a 10mm hex drive). IMPORTANT: measure up to a trim line before jacking the truck up and removing the wheel, as you have to lower the jack back to that height after removing the wheel to set the truck at normal ride height. With plug removed, no fluid was coming out while the truck was running. I pulled the airbox back out and added just over a half-quart. Removed leveling plug and I now had a small stream of fluid coming out of the transmission. I let the stream trickle down then reinstalled the plug. So overall, I refilled the transmission with 5.5 quarts of ULV.
PTU: This oil literally looked brand new. I was very surprised. Drained then refilled and got about 13-14 fluid ounces into the unit before spilling out of the fill hole. Drain plug is a 3/8" square drive, fill plug is an 8mm hex drive. In the pic below, you'll see the swipe on the paper is very clean. I did have some particulate on the magnet of the drain plug though, shown on the towel.
RDU: This oil surprisingly also looked almost new. Drained and refilled and got about 28 fluid ounces before spilling. Both the drain and fill plugs are 3/8" square drive. Same as the PTU, oil swipe below is pretty clean but there was particulate to wipe off the drain plug magnet.
Engine air filter: Went with a Wix again like last time. I thought it was going to be dirtier, but for $11 I'll just throw a new one in.
Cabin air filter: Also went with another Wix. Definitely was time to change it!
Spark plugs: Replaced with NGK Iridiums. I'm an NGK guy from my experience with snowmobiles, jet skis, and other two-stroke small engines. Never have issues with them. The gaps on the original plugs were more or less all at 0.032". Honestly, these plugs look fine (other than the discoloration on the insulator) and would probably last me many more miles. But like the filters, for a nominally small price, I will replace them ($22 for the set of four). Gapped the new NGKs to 0.028". I am keeping the old plugs on the shelf as they look acceptable still.
Just thought I'd do a little write-up as to my findings on this service. Overall, there was nothing I saw that was out of the ordinary. No oil leaks on the block, no leaks on the transmission or other driveline components. Even with the salty Michigan winters, I think it's been holding up very well. My garage foreman also agrees and was a great help today
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Last edited:
Yes, there is a shortage of ULV Transmission Fluid! 
He will literally crawl under the truck with me 
