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Discussion Starter #1 (Edited)
Stahlbus oil drain valves are installed in place of conventional oil drain plugs. Once installed the valves simplify the procedure for changing oil in your car. The quick disconnect drain hose connector snaps into place opening the valve to drain the oil. When the drain hose connector is removed the valve automatically closes. Each Stahlbus oil drain valve includes a high-strength steel valve body, copper sealing washer, anodized aluminum safety cap, quick disconnect hose connector, 40 cm Silicone drain hose, and instructions.

Unlike competitive oil drain valves, Stahlbus oil drain valves do not have a lever-operated ball valve. The valve is opened when a quick disconnect hose connector is attached to the valve. The absence of a lever allows for a much smaller valve design compared to competing products. The Stahlbus drain valve is just slightly larger than the standard oil drain plug. The smaller symmetrical shape of the Stahlbus valve allows it to be installed without an additional adapter frequently required by the more bulky lever-operated valves.

Corvettes require the M12x1.75 thread size.

Stahlbus Oil Drain Valves - How it works.

Reverse Logic Limited Store - Oil Drain Valves


oil_drain_valve.png
 

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That Stahlbus oil drain valve looks very clever in design and functionality.
 

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Discussion Starter #3
Photos of M12x1.75 Stahlbus oil drain valve

Here are a couple of photos of the M12x1.75 oil drain valve. This is the size that fits Corvette engines.

M12x1.75_components.jpg M12x1.75+cap.jpg
 

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Fred - I need a M12 x 1.5 for my scooter. Can you tell me exactly how many MM sticks out of the hole when installed for normal driving?

the dimension I need is in red below:
 

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Discussion Starter #6
Stahlbus ODV installed

I finally had a chance to install an M14x1.5 Stahlbus oil drain valve on my SUV. It's much smaller than the Fumoto valve I removed. I also feel better about not having a lever on the valve. I was surprised to find that the Fumoto valve was only on "finger" tight. Apparently the fiber washer requires occasionally retightening the Fumoto valve.

The hex nut on the Stahlbus ODV is 19mm.

M14x1.5_ODV_installed.png
 

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I have both the stahlbus and the fumoto on my vehicles. The fumoto stays tight and has never been a problem in 7K miles. That being said, the Stahlbus is more elegant and advanced.
 

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Discussion Starter #8 (Edited)
I had the Fumoto valve on for 20K miles and did not notice it being loose on previous oil changes. It was probably my error not using the proper torque when I installed it. Due to the irregular shape of the Fumoto valve it's not really practical to install it with a torque wrench.

I have both the Stahlbus and the Fumoto on my vehicles. The Fumoto stays tight and has never been a problem in 7K miles. That being said, the Stahlbus is more elegant and advanced.
 
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