Just in case there are any frustrated DIY-ers out there who do random Google searches to find their engine block coolant drain plug...
I FINALLY found the plug after about 45 minutes of searching on my US-model 1.8 L 2000 Toyota Corolla on the rear of the engine block, most easily accessed from the driver's side of the vehicle. Pics are uploaded for reference. There's really no way to describe it. Also, you really, really need a flashlight to see it, even in broad daylight.
My Haynes Workshop Manual has a perfect picture of it (Section 1.18, picture 23.4) but the Haynes Repair Manual (the cheaper one) was useless.
The radiator drain plug/valve is directly beneath the radiator, slightly to the passenger side, and is relatively easy to find.
I had a 85 Corolla that had the plug on the bottom left side of the radiator as you are looking under the hood from the front.
On the bottom right of the radiator there should be a small square piece that is the plug. You twist it out and the coolant will come out.
To drain the coolant on a Mazda 626, locate the drain plug on the bottom of the radiator. Remove the plug and drain the coolant into a pan.
its on the bottom side of the radiator with a white plug.
Bottom of the engine on the oil pan somewhere.
lorftion drain plags 3.0 l Ford
It's located below the exhaust manifold.
Let's drain the coolant, fill it with water, and find out!
where is the draincap on the radiator on the deawoo leganza 2000
The engine coolant drain plug, on a 1998 Ford expedition, is located on the bottom of the radiator. The drain plug will come out by turning to the left.
The oil filter and drain plug on a 2004 Toyota Corolla is located on the bottom of the engine. The drain plug is on the side of the oil pan while the oil filter is located to the left of it.
Wear is drain plug on 1997 GMC 7.4