Craigslist 80's under $5K

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8.5 - 9, pretty close when rounding, but our odo's read slow since we are running stock gears. I was calculating off my tire size delta from stock 265-70-17 to 315-75-16. I take the mileage and multiply by 1.09, then divide by gallons.
 
You might know all about rocks, but I think your math is screwed up. :flipoff2: Best I ever got on 33's and stock gears was 16mpg. That was running around 65mph the whole time. That was also before I had any armor.
I have heard that thicker oil will decrease mpg's. That may be my problem. I'm getting good reports from Blackstone on my UOA's so I'll stick with it.


Hater

I was driving between 70 and 73 mph most of the time.
 
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