Where is drain plug for 1998 dakota 4x4 i need to drain radiator &what is the turning thing on the lower drivers side of radiator 4

Here is a picture and shows the location as

Your radiator drain plug is located on the bottom of the radiator, driver's side engine side. It simply unscrews but does NOT come all the way out.

https://www.justanswer.com/dodge/1jxa4-2000-dakota-4-7-4wheel-drive-w-tow-package-radiator.html

and this is what it looks like

https://shop.advanceautoparts.com/find/dodge-dakota-radiator-drain-plug

And some generic videos on flushing coolant

https://www.google.com/search?q=1993+dodge+dakota+flush+coolant

..

This is a post on the Dakota forums:
My 2001 Durango and 2002 Dakota they use the same radiator. You'll have the same setup. I have recent and intimate knowledge of draining them. Crawl under the left front of the truck and look up at the bottom of the radiator. At the bottom of the driver side radiator tank (facing toward the fender) is a 3/4" long flat handled plug. Twist your hand (with a pair of pliers) up there from the back side of the bumper fascia. Grip it and give it a 180* counterclockwise twist. It is now opened and draining out the little nipple sticking straight down from the bottom of the side tank. You can stick a 5/16" (or 3/8") hose onto the nipple to drain it into a bottle or pan without making a mess.
radiator coolant drain plug location Dakota Durango Forum

Start by removing the shroud over the radiator area. There should be little plastic screws in it holding it on. Then drain the coolant from the old radiator. there should be a drain on the lower passenger side of the radiator facing the rear. looks like a white nut, turn that until fluid runs out. Make sure you have something available to catch the coolant. I used a small rubber hose attached to the end of drain to direct it to container. After all fluid has drained, disconnect the overflow hose running to the plastic bottle on right of radiator. Remove the 3 bolts holding the bottle in place, and remove. You will not have to remove fan and shroud from vehicle if you just remove the four bolts holding the blade itself to the pulley you can then slide them back far enough away from radiator to get it out. That will make things much easier. there are two other hoses that attach to the radiator 1 on upper passanger side and 1 on lower driver side, remove those. Then remove the two transmission cooling lines from the radiator and plug the ends to prevent dirt getting in. Once all hoses and lines are detached from radiator remove the two mounting bolts at top of the radiator where it attaches. Those are the only bolts holding it in. it rest inside grooves at bottom so you just pull up the radiator and you have it removed. Installation is the opposite of removal. Try to get your plastic (degas) bottle as clean as you can if your reusing . If radiator will not drain through plug for whatever reason, removing the lower driver side hose will drain very quickly but be ready for a rush of coolant. I hope this helps you out.

they are so hard to get any more,i find it easier just to remove the lower radiator hose from the radiator to drain one

It is some times placed at the bottom of the radiator Right side.If it does not have a drain plug then the bottom hose has to be disconected to drain

with the use of a special socket that fits over the drain plug You can remove it from the bottom of the vehicle... obviously you will need to drain the radiator fluid first with the use of a drain pan to catch the fluid. Install is the reverse procedure

COOLANT CHANGEON THE RADIATOR (LOWER DRIVERS SIDE FACING THE MOTOR) THERE IS A PLASTIC LIKE PLUG THAT YOU TURN COUNTER CLOCKWISE ABOUT 3/4 OF A TURN, THEN YOU CAN PULL IT OUT ABOUT 1/2 AN INCH THIS WILL DRAIN THE RADIATOR, THEN YOU CAN PUSH THE PLUG BACK IN AND TURN IT UNTIL YOU FEEL IT LOCK BACK IN PLACE. REFILL RADIATOR WITH 3 PARTS COOLANT TO 1 PART WATER.
1998-'99 Intrigues equipped with the 3800 engine have a specific process for replacing antifreeze. It is somewhat of a lengthy process and you should refer to your owners manual for doing this. After you empty and flush your system with water (garden hose), only fill the system with green 50/50 antifreeze, NOT Dex-Cool. Avoid Dex-Cool. If you bring your Intrigue to a shop to get serviced, make sure and inform whoever doing repairs and/or leave a note (clearly visible) to NOT use Dex-Cool if they're doing any work pertaining to cooling system.

,m ake sure the radiator cap is off,oh or the radiator is clogged, remove lower radiator hose]and flush with garden hose

remove one end of the bottom hose,it doesnt have a drain plug ,they went out with the arc

LOOK AT THE FRONT OF THE RADIATOR ON THE LOWER DR SIDE IT REQUIRES A 1/4 DRIVE RATCHET AND 4" EXSTENTION