NRALIFR wrote:
Then you're not getting 30+ MPG. It would be more honest and accurate to say that your cost per mile or per gallon is X. It will still be an impressive number to the rest of us who know what a gallon of Diesel costs.
Just FYI: waste veggie oil (WVO) has just slightly less btu's per gallon compared to Diesel. WVO is about 120,000 btu/gal and Diesel is about 128,000-130,000 btu/gal. So with a 50/50 mix I would expect to see just slightly lower total MPG vs. 100% Diesel if you were measuring the fuel quantity accurately enough.
You've given me a great idea though. Everyone knows the 2008-2010 6.4 PSD's get awful fuel mileage in stock trim. From now on though, I'm going to start stating my MPG based on just the amount of Motorcraft Diesel additive I add at each fill-up, which is about 6-8 ounces. That should get me some impressive numbers!!! :B
:):)
That's the advantage of the old 7.3, no mod needed. I really don't see a drop in mileage compared to running straight diesel, but I drive like I'm 85 and the straight drive also helps. I'm sure my pulling numbers will drop.