If your 1998 Jeep Cherokee is leaking coolant, it might be a seal but it is more likely that it is a hose. This might also be a radiator leak, a loose hose clamp, or the freeze plugs in the radiator.
No, any antifreeze/coolant will do.
Yes, if it is leaking and the coolant level is low.
IN THE WATER JACKET.
If you are sure it is water and not coolant, then the A/C Condenser drain line is stopped up. You will find it near the firewall on the passenger side. Look for a tube under the Jeep. If it is coolant, which will taste sweet, your heater core is leaking and must be replaced.
Probably engine coolant. The heater core is leaking coolant.
A 1997 Jeep uses green coolant.
A 1998 Jeep Cherokee has disc brakes in the front.
A 1998 Jeep Cherokee uses R134a.
NoNo
my jeep Cherokee 1998 4.0 is a straight 6
Not sure if this helps, but the book I have on my 1996 Jeep Grand Cherokee says that their are 2 of these sensors, I have not had the time to look for the second one. I have the same problem.
A 1998 Jeep Grand Cherokee has a four speed automatic transmission.