Yes you can.
Your options are,
1. Go to local Jeep dealer and order a set of factory fog lights they will install them but will cost $200-$500 (depends on dealer).
2. Buy a set of aftermarket fog lights from autozone, advanced auto parts, summitracing.com, 4wheelparts.com or 4wd.com. I'd recommend mounting them on top of bumper 1"+ in from headlights, you can pay anywheres from $20 - $1,000 depending on what you get, install will take 1 - 3hrs depending on your automotive skill level.
No
A 2003 Jeep Liberty uses red, hoat, five year coolant.
Yes, you can.
The fuel pressure of a 2003 Jeep Liberty Sport depends on the usage of the car. It can also depend on the elevation.
Half an half
On a 2007 Jeep Liberty Sport, it is located very low behind the bumber on the drivers side. ----
i guess the '03 is newer?
5 year, HOAT. Not Dexcool.
add r134a to the service port
replace rear tail light bulb
1-6-5-4-3-2
Mounted on top and inside the fuel tank.