Wish me luck. 2014 navigator oil change

I mix everything in our '08 5.4 3V and have been since chain rattle in 2020. A little 15W40 HDEO, some 10W40, 10W30 and a dash of 20W50? Sounds good to me.

That said, if you're concerned about oxidation from a leak, I dunno.....maybe?
 
I did it today. Couple of observations…
1. The quick change place really tightened down everything. I had to get a long wrench and a hammer to budge the drain plug.
2. The 5 quart container* seemed to fill it. I’ll check it in a day or two after a little running. **

* found an intact container of Pennzoil platinum 0w20 that I used.
** roofers showed up a day early and were rushing me
 
I did it today. Couple of observations…
1. The quick change place really tightened down everything. I had to get a long wrench and a hammer to budge the drain plug.
2. The 5 quart container* seemed to fill it. I’ll check it in a day or two after a little running. **

* found an intact container of Pennzoil platinum 0w20 that I used.
** roofers showed up a day early and were rushing me
99% sure you're two qts low. The interweb says 7 qts for the 5.4 in a '14 Navigator. This has been my experience with pretty much all full-size truck 5.4 3Vs. I think you get the 4V? but it appears crankcase capacity did not change.
 
I think you’re right but I’d rather be low at first and add than overfill. When I can let it warm up again, I’ll check it again (and probably add).
 
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