An oil temperature gauge is an instrument used to monitor the heat levels of an engine's lubricating oil. It is a critical tool for maintaining engine health because oil that is too cold may not lubricate properly, while oil that is too hot can thin out and degrade, leading to permanent engine damage. 
Early Warning System: It can alert you to engine issues before they become catastrophic failures, providing a more direct look at engine stress than a standard water temperature gauge.
 
52mm
12v