I just got the VERY cute little liquid level switch (sensor) today from McMaster-carr. I decided to install the loss of coolant light and buzzer on my 91 745 turbo after the scare I have a few days ago. My thermostat broke and stay shut causing the engine to overheat rapidly and blow half of the coolant out of the reservoir cap. I caught it soon enough not to have anydamage to my engine. However, it's a very scarry situation to be in and I don't want to risk my red block again. As most of you know there is a nice write-up of the installation procedure for the system in 740/940 FAQ. I'll put it on my 740 ASAP and try to figure out how to put one on my 93 245 (my other precious possesion!). Anyone out has done this to their 240 yet? Any advices? Thanks. Erwin
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