During the original (rushed) build I removed the sensor for low engine oil level from the block and tapped a wooden round peg in the round hole. Now, during a rebuild I have more time to consider... should I properly seal the hole, which kept weeping oil .. or reinstate the oil level warning sensor. To be honest I am thinking that it is not needed and just one more thing to leak or go wrong and I am not sure if it is just a single point sensor or a gradual sensor. So before I throw it away I was wondering if anyone else has fitted/used this sensor and has some experience to share.