1. EPA’10 Emissions Update Scott Barraclough Powertrain Sales Manager Mack Trucks, Inc.

2. US10 requires 92% reduction in NOx and 90% reduction in Particulate (Pt) relative to US04 US10 requires 92% reduction in NOx and 90% reduction in Particulate (Pt) relative to US04 1994 1998 2002/2004 2010 2007 5.0 4.0 2.5 1.2 0.2 0.010.1 BSPt (g/bhp-hr) BSNOx (g/bhp-hr) EMISSIONS HISTORY AND FORECAST US - EPA STANDARDS HEAVY DUTY DIESEL ENGINES

3. NOx Aftertreatment Particulate Aftertreatment EGR Electronics Base Engine U.S. On-Road Heavy Duty Diesel Emissions Standards Percent Reduction.01.1.25.6 1.0

4. Competitive Positions for EPA’10 SCRSCR –Mack Trucks –Detroit Diesel (MBE) –Paccar MX –Volvo Trucks NA (Volvo Proprietary) –Cummins EGREGR –International MaxxForce –Caterpillar CT

5. EPA'10 Solution In Action…

7. In-Tank Heater / Pickup Fits inside DEF tank from top Circulates engine coolant through the Diesel Exhaust Fluid All stainless steel, high- quality No tank insulation is required

8. EPA'10 Solution In Action…

12. Some SCR History… June 2003 (6) Tractors – 2 million miles

13. No Active Regeneration For Highway Application All Passive Regen Integration of the functions of the engine, the DPF, and SCR Reduced levels of EGR Higher NOx out The SCR process “Nukes the NOx” Clean Air + Superior Fuel Economy

14. It’s All about Fuel Economy Even in 1998 we knew… Diesel Fuel should be sipped!

15. SCR Packaging

16. Diesel Exhaust Fluid (DEF) Typically available volumes: –10L emergency jug –55 gal drum –330 gal bulk container Most heavy duty OEM’s will be offering trucks with SCR technology and therefore should have DEF available at their dealerships as well

17. Myth: DEF is toxic Acidic pH DEF is safe to handle and store –Non-toxic –Non-polluting –Non-flammable When stored at extreme temperatures, neither DEF nor Urea become toxic Poses no serious risk to humans, animals, equipment or the environment when handled properly The product is slightly alkaline with a pH of approximately 9

18. Thank You