Driving tips to help a Cat C15 to be better on fuel.

I too have 5” pipes from turbo to dual 5” in/out mufflers.

The pyro has not gone over 900°f even with the 575 tune.

The cooling system keeps up just fine with the fan coming in when it needs to.

 

Hello fellow truckers

Update: so far my company freightliner with the c15 cat ACERT had worked great up until October of last year when it started puking coolant out the coolant tank.

Right now I am still waiting for my truck to go in the shop to have the head pulled off and sent away to verify if it cracked or a bad head gasket.

My boss has other trucks in the fleet so I’m driving a 1992 Pete with 425 hp 3406B cat at the moment while the freightliner waits for its turn in the shop bay.

While the 3406b is a simple, smooth running engine, I sure do miss the grunt of over 2,000 ft/lbs of torque the acert has.

Right now I am hauling logs and grossing nearly 140,000 lbs with the Pete.

I am finding the freightliner to be better on fuel since the programming was done.

Also the freightliner would easily cruise at 62 mph even on hills that we have while the Pete slows down and have to down shift.

Still, I am having fun driving the Pete as well!

Here is the 1992 Pete with 3406B cat.

 

Good Bloom; my boss is a licensed mechanic and he knows that I have rebuilt engines on farm tractors.

That 3406b cat engine was a good learning experience.

 

Cat sdp:

The truck has had an issue that Cat couldn’t find for a long time even before I drove the truck.

That was why we tuned it in the first place.

The computer kept going half power for no reason at all. No engine lights, nothing.

Cat did a engine check over and everything was fine to them.

Most of my loads last year were just lightweight trusses.

Heavy loads never seen over 850/900°f on the pyro.

It was when the problem got worse then we finally found it.