Cummins or Caterpillar ?

It is moot to even discuss this as Cat hasn't made an OTR powerplant since 07/08. Unlike the Cats pre 02 they are problematic. The emission system never worked properly and they never provided a solution. Just walked away. Truckers often disable the EGR system on big Cats to make the engine decent. I might also add that none of the new engines have good emission systems. The sensors go bad, on big trucks the regens can happen every other day. Parts are sometimes 2 weeks away, sometimes even the factory engineers are dumbfounded. Multiple lawsuits. Many owners complain that their trucks can be out of service for 50 days a year. It is a nightmare. The only reason we RV'rs are not having these problems is our usage is minimal and the engines do not work hard. In 2 or 3 years some of these problems will show up in RV's as they get some miles. Not one engine mfr. has figured out how to meet the new emission standards without having problems. Even though the exhaust coming out of one of these new engines is cleaner than the air going in! You can thank CARB and the EPA for this mess. They are overrun with greenies who would like to see all diesel trucks off the road!

Moisheh