LUMINATOR Posted June 12, 2013 Report Share Posted June 12, 2013 Does anyone have tips on getting better fuel economy out of an old 3.1? Quote Link to comment Share on other sites More sharing options...
RobertISaar Posted June 12, 2013 Report Share Posted June 12, 2013 what kind of commute are you dealing with? which trans? any known problems? Quote Link to comment Share on other sites More sharing options...
Reride Posted June 12, 2013 Report Share Posted June 12, 2013 Start with the basics...plugs & wires, new air filter, tire pressure check, oil & filter, and trans filter & flush. I avg. 21-22 mpg in city with a 3.1 & automatic in a '92 CSC. Quote Link to comment Share on other sites More sharing options...
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