In winter, monitoring engine temp is important and the SG temp guage is much more accurate than most dash guages. If you engine isn't warmed up fully, you'll burn more fuel. If you aren't using a grill block, I suggest you put one in. I have found that I use several of the gauges for short periods to find out certain things. Eg. GPH to find out the difference in fuel used at a light in gear vs neutral, or how much more fuel is burnt cold vs warm. That sort of thing. I like IGN better than LOD and try to keep it as high as possible.
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