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Jeep Grille Blockoffs
So I had a significant increase in fuel mileage from 15 to 20mpg in my 2000 Jeep Wrangler. This last tank was on roughly the same split of highway/country/city roads I do every day. The ONLY thing I did different as an experiment was block off 4 of the 7 grill inserts with tape to try and raise the temp since it struggles to get to temp quickly even in the summer with a 195* thermostat. I did not see much change in engine coolant temps except at highway speeds it did get a but hotter, but still at a very safe temp.
Stock sized 31” AT tires and just a .75” lift up front and a 5.3 LS with headers. Also added a bug deflector which really took the wind rush down a lot so I assume it routes air over the flat windshield pretty well. Before this even if I tried really hard for mpgs, I would maybe get 16.5mpg. I went and checked that I filled up all the way and mapped out my drives on this tank to verify the numbers were correct, and they were.
So has anyone seen such an increase with something like this alone on a brick like vehicle?
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