bjcalhoun

The only thing I can say is make sure it burns the DEF. They started using it in 10 sometime. The MP8 motors seem to be doing alright but there are some issues with truck components. If possible get a horton air engage engine fan clutch. The 08 to 10 with the DPF and no DEF will cost you a fortune to keep on the road especially if in severe duty service. The camelback suspension with the greasable brass trunnion is also something to stay away from. They went back to the rubber trunnion sometime in 11. Another Volvo deal where there was nothing wrong with their design, so they say, but then went back to old style that works.

Thank you Mackpro68, neither one of these ideas have been mentioned. I am going to look into both. These are Granite cv 713 dump trucks with snow equipment used for county maintenance.

Thanks for all the feedback, but pretty much at the same spot in the road. Believe me you have to max out the rpm's before even thinking about grabbing the next gear. After just letting off of the pedal and getting back into it they pretty much fall flat on their face. The intake pressure goes to zero and it takes ten to fifteen seconds for it to come back up. We are running five trucks like this and they all act the same, and the Mack dealer around here is no help. My biggest concern is that we have two 09 Macks that are going to have to go way before any of these. I wouldn't wish one of these 09's to my worst enemy.

New to site and fairly new to Mack trucks. The problem is with 2002 to 2006 ASET/AMI 300 Mack engines. They have been oil sampling But not doing anything to correct problems. We are running five of these trucks and they all have Mack tm309m transmissions. Changing oil every 8000 miles, but the oil is very high in soot. When driving these every gear shift will lug the motor. Probably a mix of the motor being weak and the junk tranny. As far as I can tell we need more air intake and more power. The problem is we need to do this right and one time because of budget restraints. Everyone that I ask about a good economical fix has no answers. There are plenty of people who can make Cat, Cummins, and Detroit wake up, but no luck getting answers about Mack. Any proven ideas would be helpful. By the way I'm not a motor guy, just a parts changer that understands trucks.