Im not sure if they are working or not , right here goes:
The one that tells you how full up the oil is starts off high when i start the engine then drops to the middle when i have been driving. (And i tops it up this morning)
The gadge that tells you the heat of the oil works fine as it starts of just above low and then as the car gets warm the temp gadge goes up.
The 3rd one with the bars on it seems to always be on 1. I remember it once being on 6 i think but at the moment always on 1.
Anyone?