40,000 mile report

My 2014 Nissan Frontier has now crossed the 40,000 mile mark since purchasing new in August of 2014 with 33 original miles on it. It is still completely stock. I wanted to give a report on it for anyone interested. I can't cover every detail here, but a few things are on my mind I do want to mention.

I have read a lot on the stock tires, BF Goodrich Radial Long Trails, both good and bad. My experience has been good, but my truck nearly never sees any off roading. I have enough wear left in them for at least another 5000 or more miles and if they hold up until next summer then I will be content to say I got the wear from them they were capable of. The rear tires did wear in the center more than on the edges, even though I don't haul loads often at all, or tow anything besides a 4x8 Harbor Freight trailer with a 8' plastic boat on it. I attributed this wear to the recommended 35 psi of each tire and have since dropped my pressure to the 32 psi that I always kept tires at before. That was last year, or maybe 10,000 miles ago, and have not had any further issues. I also rotated the tires once, front to back, at that time and the same has not happened to the new rears yet, but again, it's only been 10,000 miles. I'll have a new set by time it would repeat. As far as I can see my alignment is still dead on with even wear on front tire edges.

Otherwise, my truck is running fine and doing everything I want it to and seems to have no performance issues at all.

I do admit I have not performed maintenance as recommended, not even oil changes at 5000 miles. I did the first two changes on schedule. The last three oil changes went about 10,000 miles between, which resulted in the truck using about a quart of oil each time. So it's had five of the eight changes it should have had. I know this is my fault, and I should not have done this. Life and weather got in the way a few times but I know I could have found time to do it and will in the future. I use full synthetic 5w-30 Pennzoil. I hope I have not done damage, but the truck seems to run strong, same as always. I changed it yesterday and will stay on top of it from now on. Also, I believe the transmission and rear end lubricants are due for a change as well, based on things I have read on this site. Correct? These are things I have never done on any vehicle ever, so I don't know what to expect, but I am interested in doing it myself if it's not hard.

I also noticed that the battery posts tend to build up corrosion, a bluish white chalky powder. I have twice removed the connections and scrubbed this away, the second time just yesterday. This time I got some corrosion preventative and coated the terminals. They're now a pretty red and nice and clean. Hopefully this will solve that. The truck had never even hesitated to start, however, even in bitter cold. But I know a corroded battery will start to fail eventually, not to mention dissolve my connections to nothing.

I welcome any comments and suggestions, and would appreciate any offered, even if it is a stern scolding for my lack of oil changes or other things.