Yes you can, but you need to find out, maybe from your Ford dealer, how to put the transfer case in neutral. With the new electronics, there is a sequence you need to perform to do that!!
You would need to take the drive shaft loose from the rear axle. Any automatic towed over 35 mph for very long will cause the transmission to overheat.
You can tow a 1998 Ford Explorer 4 wheel drive, automatic transmission behind a motor home if the motor home has a large enough engine. Most full-size motor homes are capable of towing large vehicles.
( Motorcraft MERCON V ) automatic transmission fluid according to the 1998 Ford Ranger owners manual
as long as it is the same size motor it should
( 5W-30 ) according to the 1998 Ford Ranger Owner Guide ( 2.5 / 3.0 / 4.0 )
The 1998 Ford Ranger Owner Guide shows ( 5W-30 ) for the 2.5 / 3.0 and 4.0 engines
In a 1998 Ford Ranger , 5 speed manual transmission : ( Motorcraft MERCON automatic transmission fluid , according to the Owner Guide )
Behind the glove compartment.
It is behind the rear seat.
behind glovebox.
According to the 1998 Ford Ranger Owner Guide : The 5 speed manual transmission takes ( 2.8 U.S. quarts of Motorcraft MERCON automatic transmission fluid )
The blower resistor assembly is located on the heater case to the right of the blower motor. - Haynes Repair Manual #36071, 1993-2005 Ford Ranger Pick-ups