Welcome to FTE. :)

I use the green coolant...

Welcome!
As for the coolant, just use a 50/50 mixture, green or universal will work fine. Extended life, if you know the system is in good enough shape to not be losing coolant in massive quantities.....
These old trucks didn't require anything special, just the same old stuff that was used for years.

I stay away from pink or orange.

Welcome! On the I6 you should check the tightness of the carb-to-manifold attaching bolts. They are know to loosen, but don't tight too much.

And, since it sat you can bet there is bad gas in the tank as well as gunk. I would replace the existing fuel filter with a new, clear one and put another one right ahead of the fuel pump. The rust in these tanks can really mess up a carb.

X2 I agree.

Thanks for all the feedback! Extended life non-pink/orange coolant it is.

Will do.

The old gas was drained prior to running it (not sure how much that will help) and had planned to pick up a couple filters so I would have ones on hand when the gunk plugged them. Hadn't considered adding a second filter though.

Good to have drained the old gas. But if there was water in the gas it may have created rust in the tank that will flake and get into the fuel. In my experience that stuff will plug up the accelerator pump orifaces pretty quickly, and cause flooding due to it getting stuck to the needle's tip. That's when I went to two filters and that seemed to solve the problem.

Makes sense for a nice cheap back up. I'll add it to the list for today.

Real easy too. I did it to the beast. Lately I haven't been able to do anything to the truck. I've been busy with duty on the weekend and my wife at school at night.

I've also been researching a 5.0L OBDII swap for the Nissan.

Yesterday I replaced my Passenger side power window motor.

Here's a link to the HOW-TO:

https://www.ford-trucks.com/forums/1...ow-motors.html

Today I checked all of my sparkplugs to see how the mixture was doing. I was surprised by what I saw.https://cimg0.ibsrv.net/gimg/www.for...44eb75e8e3.jpg

https://cimg1.ibsrv.net/gimg/www.for...bf3f25397c.jpg

https://cimg2.ibsrv.net/gimg/www.for...f4e435e1ab.jpg

https://cimg3.ibsrv.net/gimg/www.for...109bc4e3fa.jpg

https://cimg4.ibsrv.net/gimg/www.for...cb06a507ff.jpg

https://cimg5.ibsrv.net/gimg/www.for...9376186328.jpg

https://cimg6.ibsrv.net/gimg/www.for...6ef4b5ff4e.jpg

https://cimg7.ibsrv.net/gimg/www.for...a9303978a1.jpg

https://cimg8.ibsrv.net/gimg/www.for...5990813ee3.jpg

The second picture is actually number 3. I ran a compression test on all of the worst looking plug holes and they all came out to 155 PSI. Not sure why they are like that, last time I checked them all they were all a really light tan color. Engine doesn't burn a drop of oil, doesn't smoke a bit. Although it has been run in the driveway a lot lately. Runs smooth as can be. Have to keep an eye on it I guess. Valve seals were new last summer, or about 800 miles ago.

This is what they looked like the last time they were all out at the same time, last July.

https://cimg9.ibsrv.net/gimg/www.for...ffbbada624.jpg

https://cimg0.ibsrv.net/gimg/www.for...ae7c0540fe.jpg

How many miles did you put on it in the last year Matthew?

Last year, can't remember. But Since last may to this may I've put 1,000 miles on it. I'll have to get it on the freeway a couple times and check them again. The pictures of when they were clean was when I was changing the cam and it had a pretty good last drive before I pulled the engine apart.

Matthew - You need to focus on the plugs, not the engine. But, I can see that those plugs are dark. So if the same plugs were light earlier then something is causing it to run rich. Power valve?