> Vacuum is pretty useless unless you have a turbo and can watch the boost > kick in. It will only show big vacuum leaks, way out of spec timing, or > bad valves; all of which you can avoid with good maintenance. Oil temp well, actually, a vacuum gauge can be quite useful .... it's a miles-per-gallon meter. :) if you use it to ease your speed on the highway, you can get better mpg. high vacuum means the engine is really sucking the air in ... and fuel, too. mercedes used to put vacuum gauges in several of their models, but the readings were in mpg rather than bar or in. of Hg. :) |
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