[Mark Henry]

Originally Posted by worn

Thanks Mark. Do you ever worry about the check valve failing in the closed position? I always thought the product a great idea...except for the worry mentioned above.
Also, it is summer, and I get to drive my teener!

No and I can't see how it could, the valve is a very lightly sprung cone, even if the spring broke it would be left in the open position. The cone is centered on a bushed shaft, which is of course always in oil. I see zero difference in oil pressure, the idiot light goes off just as fast, plus the size of the body I can't see the area being a bottleneck.

Another added bonus is I no longer need to have the engine running and hot to check the oil level, BUT I did check both ways till I was comfortable with this. Not running it shows about 1/4"-3/8" less than running on a 914 oil tank.

For the 914 and early 911 get the smaller hose size, the actual body size of the valve is the same size for both the large and small hose sizes.