My Mercer Experience 8-31-15

The company I was at hauled car parts. We were empty going out and loaded with usually less than 10k pounds coming back. On paper, everything looked great. In the real world, it's just too much gear especially for the 40,000 pound loads I've been hauling. I've been looking at gear swaps. I just haven't decided on a gear yet. I was thinking 3.55 but I'm wondering what that would put my rpm at at 70mph. I don't want it turning 1800rpm at 70. The sweet spot on mine with these gears is about 74. Any lower and my fuel mileage drops and it doesn't run as smooth.

 

To get the same rpm in 9th I'd be at 57. I'm not driving 57.

 

I've tried 65, 68, 70, 72, and 74. Best mileage was 74. Worst was 65.

 

I agree. But I think with this gear it was spec'd to run 70+. I'm going to do the EGR delete and see what that does. The. I'll look at a gear swap. I just don't want to keep putting money into this truck just to get rid of it.

 

Well I am pretty picky when it comes to a hood truck. It could be 6 months or more before I can get one set up like I want and in good shape. That $1800 may help my fuel over the next 6 months and save me even more money. Plus, I don't want to trade in my problems and the next guy get them. I wouldn't feel comfortable with that. That next guy may be like myself just trying to get started and the truck sink him.