This is a handy device. What is it then? It's a tap that screws into the sump, replacing the sump-plug and making it a heck of a lot easier to change the oil. Or to even just drain a small amount for analysis - yes, if you run a high performance car where you analyse the oil for signs of excessive engine wear or oil breakdown, taking those samples just got ridiculously easy.
The Valve The Engine Oil Drain Valve is Japanese-made and US patented. It uses a high quality forged brass body and stainless steel internal ball valve. To prevent the valve being inadvertently opened, a 'lift and turn' action is required.
The construction quality looks excellent. Fitting the valve is dead simple - in fact, if it is done when you are doing a normal oil change, it takes no extra time at all.
First up, you undo the sump plug... ...and drain the oil. Then you screw in the drain valve, which has an identical thread to the sump plug. Care should be taken that the valve is not over-tightened. Fill the engine with oil and then whenever you want to drain it or take a sample, lift and turn the lever.
Versions The valve comes in different versions to suit different engines, with the vast majority of cars on the market catered for. In addition, the valve can be bought with or without a hose nipple.
Conclusion I think that the Engine Oil Drain Valve is an excellent product. The sealing appears leakproof, the two-step tap opening is likely to be very reliable and the convenient.
I do a bit of country driving on dirt roads etc. There is quite a bit of sticks and things that come up and hit the sump. You should see the damage the previous owner has done to it. dinted sump and the bracing under the air con radiator. Ouch! I'll get pics one day.