Hey all, I've got a 2018 5.0 Sport that has over 120k miles, I've been looking at replacing it, but haven't had any luck finding anything I like. So I may just run this truck another 120k miles. I bought the truck with 18k miles, and the only thing I've put into it are tires, oil, brakes, the normal stuff. Is there anything I should just get replaced now before it becomes a problem when I really need it?

 

well i had to change the intake when i hit 120K so be ready for that one

 

Refer to your owners manual for recommended maintenance items at certain intervals. (Example, spark plugs at 100k)

 

If you haven't done it, it's past time for a change of all fluids. Coolant, brake fluid, transmission fluid, gear lube, transfer case. Plugs and coilpak boots as well. Clean the throttle body and MAP sensors.

 

Why?

 

Good idea, some of that is out of my expertise so I'll make a list and ask my mechanic to do it.

 

Change all fluids except for the transmission fully…you’re way overdue for a full change so swap in 5 quarts every 5k miles or so, would be my recommendation. Other than that don’t worry about what might be on the horizon, it’s impossible to know, just drive the thing.

 

This is absurd. Why? Transmission fluid doesn't work in the same environment as oil. This is just a waste of money.

 

Transmission fluid has a useful life span just as engine oil does. Most people overlook it because technically the transmission is working and that is all most people care about. Truth be told unless there is a serious design flaw in the transmission (think latest Tacomas) the transmission if properly serviced will most likely outlast the engine and vehicle itself. I had a 2011 F150 XL with the 3.7L V6 and towed with it regularly (sometimes overloaded). I changed the transmission fluid every 36,000 miles as well as many other details in regards to maintenance. This truck had over 300,000 miles on the engine and transmission before a tractor trailer destroyed it. My current XL does not yet have as many miles but, the transmission is still serviced at 36000 miles. The fluid lubricates as well as protects. It has additives that wear out with time and with heat cycles. Just like engine oil if you don't change it your transmission will eventually fail. Lots of people cycle through vehicles and never see the end result of their neglect. It is that 2nd or 3rd buyer that has to deal with the issue. I can go on about this topic however, the bottom line is this. It's your vehicle do what you will with it. Just remember, fluid is cheaper than metal.

 

I can't believe you let it go that long. You should really be changing the transmission fluid at 33,000 miles. The third owner of your truck is going to be pretty sore, I tell you what. You should write him a note of apology and leave it in the glove box.