This is E39 specific, but it MAY work for the E38 and E53 too - not sure, probably best to find out, before you try it. I made this from info collected off the net, and use it quite a bit, so thought I'd tidy it up and sort it out to hopefully make it of use to others. Because of the high number of problems with cooling systems, and the HUGELY buffered gauge on the E39, I thought I'd make a "How to" to read the KTMP (Coolant Temp) your E39. NEVER trust the gauge - there are a lot of E39's out t