Join Date: Oct 2010
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Want to improve MPG on your PSD? Well, the easiest way is slow down. And stay away from city streets. Seriously, I have experiment and it proves over and over.
I have noticed the colder outside is, the MPG will drop. When it gets warmer, then MPG rises.
Try drive less in city, more on the highway. Even on the highway going 55-60MPH will yield 22MPG on my PSD. If I go 70MPH it drops to about 17MPG. That is alot drop when speeding. Lately the weather is getting better, I'm seeing average MPG from 12 to 14. That is mixture of city and highway.
I wouldn't try to modify my Powerstroke engine at all. It is not worth, because saving dollars on fuel can result hundreds of dollars on repairs.
I personally wish that there is no turbo in my PSD. That is because with Turbo, it does decrease the power but it also increase the mileage.