Things you wished you did...
#16
If you do your own oil changes, put on a relocated oil filter. Not sure if the new trucks are as bad as mine ('01 5.4) but I cuss the engineers every 3000 miles. Oil goes everywhere cuz the mount is buried up over the front axle and is HORIZONTAL. Who the H*** puts a oil filter horizontal!?!?!?!?
It's pretty much the same way on my 2008. I had to use my dads old strap oil wrench instead of the nice socket ones that fit over the end. Still took me 20 minutes to figure out how to jam my arm up there in some way that I could turn it.
#19
#20
IWE solenoid - never heard of it before, but just did some searching based on your comment. Is that something that people are proactively replacing every xx miles, or just something to keep an eye (ear) out for and replace it ASAP if it starts buzzing?