Tune up questions

[cesspool]

First how many grease fittings are their under the X? I found 4.

What tire pressure should I be running? Door says 48 psi with 6 passengers and 300 lbs of cargo. The tires say 60 psi and the spare says 80 psi. I have a 9000# TT. But this week I am driving to Florida (900 miles one way) WITHOUT the TT just to visit family and I'd like to optimize fuel economy. But am curious for the towing also if I need to switch back and forth.

[CSIPSD]

4-6, depending on the ball joints...

Fill the tires to what the tires say...

I never change my tire pressure...