On the older 4.0L Ford there is a plastic shroud directly under the radiator. Remove it (not hard) and you should find the drain petcock. It is easy to spot and is on the passenger side of the radiator.
The oil drain plug on the 2000 Ford Ranger is on the rear of the oil pan. It is located under the vehicle near the center.
underneath the engine
lorftion drain plags 3.0 l Ford
On the oil pan, bottom of engine.
There are either two or three wires on a water temperature sensor for a 2000 Ford Ranger 4.0.
can you use a transmission from a 1993 ford ranger in a 2000 ford ranger?
it is behind the thermostat in the water jacket
It is on the lower passenger side of the firewall.
Let's drain the coolant, fill it with water, and find out!
where are the fuseible links located on a 2000 ford ranger
bolt pattern for 2000 ford ranger & ft pounds
The radiator drain is located under the radiator (you may have to raise your vehicle to spot it beyond the shield). (1)Remove radiator cap and attach a 3/8" diameter hose to the drain fitting to direct the coolant into a container and then open the drain fitting with a pair of pliers. (2)Flush radiator with fresh water from a garden hose until water runs clear through the plug. (3)Refill with 50/50 mixture of water and antifreeze. Piece of cake, huh!! The hardest part is locating the drain fitting which appears to be well hidden, but I think it is on the driver's side of the radiator. Good luck. By the way, intructions are from Haynes Repair Manual Ford Ranger 1993 - 2005.