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| 7.3L IDI (Non-Powerstroke) Diesels Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines. |
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I have a 1990 f350 dually 4x4 quadcab with a 7.3 diesel with an aftermarket turbo. I am getting about 15 Mpg. I use it to haul a 4 horses trailer with living quarters. How can I improve my fuel mileage? Thank you in advance for your help!
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