I think I may have one on my Disco?
Is this normally mounted on top of the radiator?
https://www.aulro.com/afvb/images/im...10/10/1104.jpg
The guy I bought the Disco off mumbled something about it to me about it, something about a beeper or something?
In any case, if this is indeed an engine saver, how can I check its operational, I can appreciate how much of a god send this device would be to saving ones engine from lunching itself, moreso considering I have a water cooled turbo!

