Improving reliability
 

Post the top 3 or so things you can do that give you better gas millage or improve reliability of your rig. I would say............
1)propper air pressure
2)good spark plugs
3)clean air filter

clean air filter,good plugs,and ignition and proper tire pressure.

All of the above plus, No brake drag, good wheel alignment, camshaft retard within specs, (2nd gen only) and no DTC's in memory ;)

all of the above and get rid of any unnecessary weight

I would have to add in making sure the vacuum system is in good shape as well. At least for 4x4 models.

change the engine oil

1) Drive it
2) Drive it
3) Drive it

It seems if I let mine sit something breaks. So for me driving is the best to make it reliable but not so good for the mileage.