ACERT CATs

Some hate them.. but they're fine .

Very reliable, they don't hate idling. Just stay away from the sdp...

If you buy one have the overhead done by a knowledgeable cat guy and make sure you have the updated studs.... (some still do not)

 

It's the series (years kinda) that the engine was built.....

The serial #s always follow that...

Sdp 09xxx or 6NZ xxxxx ...etc

 

I have a 06 W900L day cab with a MXS. It has a PDI tune and manifold. With 3:55 gears and tall 24.5s if I get less than 6 mpgs I'm looking for the reason.
Cruising rpms need to be less than 1450. You get to 1500 or higher the mileage jumps off a cliff. Also idling does seem to hurt more than some of the other trucks I have.

 

Steve,
Here is a thread not to long ago that other drivers commented on their acerts.

https://www.thetruckersreport.com/t.../c15-acert-get-it-or-not.328472/#post-5561736

Seems to me over the years on this forum people either love them or hate them. I wouldn't be scared of them one bit, however prob stay away from the sdp serial, that is the year they started the emissions and weren't very good from what I read.

I have MXS acert in a 379 Pete with 18 speed, 3:55 with tall rubber, pulling 105,500 lbs, but I'm hauling from a farm to elevators and get anywhere from 4.5-5.5 mpg.

 

This one is better....

 

2ws, 1mm, 7cz, 6nz, mbn, bxs, mxs, nxs these are the serial# prefixes I would look for. And in that order of preference.

 

I swapped that pos MX-13 for an Acert. Nothing too crazy, I wanted a million mile engine with good economy. Im getting 10% better fuel milage than I did with the Paccar and 671 HP (2613 pounds of torque) to the ground. 20K miles so far with zero problems. I would absolutely recommend ditching your Paccar and putting an Acert in your truck ASAP.