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I have not installed one. The problem with the original setup is that it only works when the engine is running. If the car is parked nose high, there will be more leakage. Since I don't live in SFO & my car is usually parked level, there is no special problem with leakage. It also depends a lot on how worn the crank & rear main are. Of course Nock recommends it, he sells & installs them for income. Not a bad idea though, if, you can find someone who knows what they are doing, to install it.
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[ 05-07-2004: Message edited by: Dave Russell ]</p>