realworld

It could be very useful if at least 15-20 regular forum members did some data collection over about a 60-day period, using the following data points: - Car/engine: 3.8/4.6/5.0 non-R-Spec/5.0 R-Spec - Fuel octane used: 87/89/91/92/93 - Miles driven: ( # ) - Miles type: Approximate ratio of...