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I use a Scangauge II, plugs into the OBD2 port. On my Volkswagen TDI, the water temp gauge reads 190 when the actual temp is anywhere from 165 to 215. In other words, its useless. The Scangauge II gives me digital readings with 1 degree precision.
Last edited by Milliwatt Rob; 07-03-2014 at 09:59 AM.
Reason: typo
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