Fuel mileage

[Brian Johnson]

I'm looking at a 2006 CHN 613. Has 460 with mack 13 spd 4.35 rears 24.5 tires. Not real familiar with this set up wondering what kind of mileage to expect and what to watch out for with the aset engine. Local grain hauling is what the truck would be running.

[GoldDog44]

if you're gonna run anywhere between 80,000 to 105,500 you can expect 5-5.5 US mpg at least. Local running might be a tad lower and I'd be careful if you're gonna pull anything over 90,000lbs. The engine will be your weak point. We have injector issues with heavier loads here in Canada. Be respectful with it and you should be fine. 

[Brian Johnson]

Thank you for the information, that really helps out. I run a 380 c12 in an 03 Pete now, only get around 5 mpg or so. I haul 80000 25 to 35 miles one way to the grain processes plant then return to the elevator empty, normally get 4 to 5 loads a day and run on average about 60 mph. With 4.35 rears in the mack I'm looking at, wasn't sure what kind of mileage to expect. I appreciate the information and any other tips or insight would be appreciated as lwell.

[GoldDog44]

With 80,000 lbs you should be fine. The engine is basically the same size as a C12. 

[GoldDog44]

Those 11.7 litre engines did well except in the heavy haul department. With 140,000 lbs up here they were ok if you respected the engine for the small block it is otherwise with rookies we would have issues with injectors popping.