Yes the highest vacuum reading will give you best economy. Very handy tool. Robin Giesbrecht >From: Kerry Pinkerton <pinkertonk@xxxxxxxxx> >Reply-To: mailing-list@xxxxxxxxxxxxxxxx >To: mailing-list@xxxxxxxxxxxxxxxx >Subject: IML: Fuel mileage >Date: Sat, 22 May 2004 21:48:26 -0500 > >I have a question about fuel mileage. Will running with the RPM on the >lower side of the torque curve (about 1800 rpm) when pulling heavy (as in >towing) be worse on mileage than shifting down so the RPM is up in the >fatter part of the torque curve (about 2500). At lower RPM the motor seems >to be lugging when towing while at the higher RPM the motor seems more >responsive and it SEEMS like my foot is not as close to the floor. > >If I put a vacuum guage on the car will that show me the best operating >conditions for max mileage? Does higher vacuum = higher mileage? This is >one case where one of those instantaneous mileage computers would be >handy.... > >Kerry ><< pinkertonk.vcf >> _________________________________________________________________ Add photos to your e-mail with MSN Premium. Get 2 months FREE* http://join.msn.com/?pgmarket=en-ca&page=byoa/prem&xAPID=1994&DI=1034&SU=http://hotmail.com/enca&HL=Market_MSNIS_Taglines