Originally Posted by stega
Just an FYI digital gauges such as yours are notoriously wrong... I learned this the hard way after spending $40 on a nice digital guage.
Do yourself a favor and buy a cheap mechanical one.
Thanks for the words of wisdom but i did some research before i bought it. This guage was reviewed in a UK motoring magazine a couple of years ago in a group test and it was proven to be very accurate under test conditions. In fact quite a few of the digital guages beat the mechanical ones. Nowadays a decent digital guage is just as accurate (or more so)than an analogue guage....looks like you just bought a poor one.