ISX or DD15, which should I buy?

if you want a Pete with a Detroit just buy a 389 glider with the 12.7 and be done with all the EPA crap. Unless you have to run CA then a glider it out of the question.

 

KW, Freightliners, and western star also offer gliders. Not just 12.7 detroit, also cat engines like c-15 6nz.

 

They all break! It's just a question of how often and how much $$$. I think the next truck will be a S60, 15 spd, in a glider.
The real question is, how good is your shop? A bad shop will break you faster than cheap freight.

 

Fitzgerald sells good gliders. They have 10sp, 13 sp, and 18sp. They sell freightliners (coronado/columbia), Kenworth (T660/W900L) and Petes (386/389). They can get the truck ready with engine, tranny, and axles. Petes cost min $135K. Freightliners $121K with 2015s.

Harrison makes gliders. Most there dealers at Iowa. Ask cowpie. He got his blue columbia from them. Their columbias are for $113k. Coronados are $116-$120K. They start doing cascadias. some guys in this site saw two of them with n-14 cummins.

 

What year was your volvo

 

I've ran both the DD and ISX and X15 from 2011 to present. In my experiences Detroit is the better engine, but Cummins seems to have a better emission/regen system.
Had lots of parts failures on the engine itself with Cummins but only engine parts I ever replaced on a DD is the fan belt tensioner/idle pulley assembly.

Had all kinds of emissions failures with the DD but only NOX sensors with Cummins.

Me, I just like the feel and sound of the Detroit way better too. They pull more similar to a Cat. And Cummins sound like a gas engine with a bad case of spark knock, LOL

 

Sound like they're gonna chuck a rod lol.

 

After my experience with Western Star, DD15, and the service dept at the local Western Star dealer - I would never own another one of either of them. Too long of a story to put it all in here, but their parts are crap straight from the factory, their remans are crap, their service dept will not accept responsibility for their errors - the finally did after a year of fighting with them. Never again. Post 2007 ISX's don't seem to be good for much either, but I'd buy Cummins before a DD any day.