Volume 2 Issue 1 - Diesel Articles

The LMM Duramax is certainly a step forward in its reduction of emissions into our environment. These controls, however, come at a cost. In Learning to Love the LMM Duramax Emissions System, Joel Paynton looks at what the LMM accomplishes and what it costs in terms of convenience and fuel economy. In this article, I want to take a quick look at what recycled soot does to the engine oil in the LMM and recommend bypass oil filtration as a worthwhile protection for this considerable investment.

Oil bypass filters for large diesel engines are accepted as a necessity and have been recommended by several aftermarket filter companies for many years. As a certified lubrication specialist, I have recommended bypass filtration systems as a solution for many diesel applications, though not for every application. Prior to the LMM, the Duramax engines were capable of dealing with soot. Even if they could benefit from a bypass system, they could certainly get by without one. Not so with the new LMM. I absolutely recommend bypass filtration for this engine.

Volume 2 Issue 1 - Diesel Articles

Some time ago, there was a love-hate relationship with the Clean Air Act and many mechanics and owners who tended to view diesel engine emissions controls as evil. That was because most carburetors and vacuum control systems were not terribly reliable: as a result, fuel economy and survivability suffered. Entering the 80’s and the era of fuel injection, emissions systems suddenly became more reliable and usually improved the overall performance of an engine; at the very least, they did not hinder it. Computer controls allowed for much more precise engine operation. Despite this, diesel engine emissions controls sometimes still have that original stigma attached to them. In the early years, people often solved their drivability problems by removing all the emissions controls, retuning the engine’s performance – and pollution output – to pre-emission levels. This was illegal then, of course, and remains illegal today even though some people still remove EGR valves and catalytic converters.

Volume 2 Issue 1 - Diesel Articles

September 2008, Bill Heath raced the Heath Diesel Team’s 6.5L GM Diesel pickup at Bonneville. maxxTORQUE featured the vehicle in our Summer 2008 issue before the event. Now, here is a look at the Bonneville performance and what’s inside that makes this truck – that could pass for a daily driver – fast...

Heath Diesel Power’s 6.5L GM Turbodiesel Land Speed Racing truck ran a solid 153 MPH on its first trip to the Bonneville Salt Flats – that felt pretty darn good. Knowing that she has more speed in her yet – that’s even better. Here’s a look at our experience at Bonneville and the details of the build that got us there...