no.
Yes, a Cherokee has a thermostat.
Yes, but 87 octane is all that is needed.
yes. they should be good from at least 87-95.
Yes it will fit. 87 to 96 will interchange unless you change from power to manual or the reverse
Yes, replace it.
You can go with 87 thru 1995 for a direct fit.
On the '89 it's on the top left side of the transmission bell housing.
The answer is yes. They have the same bolt pattern which is 5x4.5"....so practically you can interchange rims between Cherokees from 1986 or '87 with newer Cherokee's and grand Cherokee's until they changed the body style(1999 I think)
Above the rear axle on driver side wall.
Absolutely. Remember, you are not driving a sophisticated race tuned vehicle. Your jeep will get by just fine with even regular 87 octane gas.
same place as the oil filter, right next to the distributor.