X2 what Jim said. Take it for a longer trip and see what you get for mileage. If you had been warming up your jeep, that would be wasted fuel too. It sounds like since you cut your commute from 50 minutes to 10 minutes, you decreased your fuel mileage due to driving style. I bet your drive to work previously was a fair bit of highway driving or just cruising a long, and now your 10 minute commute is more stop and go to the park and ride. So while over all you are saving money and using less fuel by taking mass transit, you are getting worse mileage because you donÆt have that nice long commute where you and the jeep can run in more of a steady state type mode. Another thing to consider too is a lot of places will oxygenate the fuel and/ or add more ethanol to the gasoline in the winter months, both of which are an attempt to reduce emissions which result in decreased fuel mileage.

For the record too, I also do not ôwarm upö my vehicles before driving. If itÆs cold enough (teens) I will put the tx case in neutral and let the trans and tx case spin over for a few seconds to get the lube all around, but for the most part I just hop in and hit the road. I donÆt drive anything too hard until things are up to operating temperature though.

Sean