What it is particularly nagging is a major failure like the one I had, where sensor reads correctly and gauge works fine, but an oil leak forces to repair anywhere. When I took the car from the workshop, one of the guys showed me the old sensor. The gaskets surrounding the sensor screw (which once fitted, are left inside the sump) were looking like if anything would have scratched them, as if they would have been loosing consistency little by little while the time goes by. Guess that this has been casued just by what it should be the normal cycle of the engine oil getting warmer and colder.
I cannot figure out how is possible that sensor gaskests could not be able to face that task,
whiile it is supposed they were choosed/fitted taking into account the thermal stress they are intended to cope with. Said this, I do not think this could be regarded as overheating (oil service temp in our engines is within the range 100șC - 110 șC, according to the gauge scale, when the engine is properly warmed up, and just slightly above when engine is kept over 4000 rpm, frankly, just a few times, since in our beloved 3.2's, that means cruising speeds quite above the statutory limits...
Hence, something is seriously wrong when not only a sensor well known for its limited life of service has been fitted for years, but even when a piece of stuff as simple as the gaskets fitting the sensor screw to the sump surface(which of course, cannot be acquired separately, but together with the sensor as all-in-one) are unable to resist the the service temp of the engine and fluids and their related fluctuations -even always within the usual range of service- on a regular and constant basis.