Right: More than 47,000 truck-lovers attended the Great American Trucking Show in Dallas to check out the newest trucks and accessories from nearly 600 manufacturers. Photo: Randall-Reilly Publishing LLC
Celebrity Lubricant

Green Grease from Omni Lubricants ( is regularly featured on Speed Channel's Two Guys Garage. Available in cartridges, pails, kegs, and drums, it is a waterproof, tenacious synthetic polymer NLGI grade 2 grease. Being synthetic, its drop point is over 500º F. It resists washout, high-impact shock loads, and centrifugal separation, making it ideal for U-joints and heavy-duty chassis applications. Its extreme pressure and tenacious properties make it superior for fifth wheels and heavy-duty suspensions.

Heavy-Duty Engine

PACCAR ( will soon offer the 12.9-liter PACCAR MX engine in Kenworth and Peterbilt Class 8 trucks. Early engines will be made by PACCAR subsidiary DAF in Europe, but production will shift to PACCAR's new engine factory in Columbus, Miss., when it is completed.

The engine brings both makes into the highly competitive, 13-liter market segment. Testing to U.S. emissions standards is ongoing, so final ratings are not available. In Europe, the MX engine is rated up to 515 hp and 1850 pounds/feet for on-highway use.

By the end of this year, PACCAR will have more than 20 million miles of real-world testing completed in a wide variety of applications. Testing is being done to 2007 EPAemissions standards using cooled exhaust gas recirculation and diesel particulate filters, but without catalytic reduction. Introduction to North America should take place well before 2010 emissions regulations, probably early next year.

Long-Lasting Tires

Michelin Tire says it's reached a plateau with today's tire technologies, so it developed a new set, called Durable Technologies ( It combines new casing features and tread engineering that increases useful tread life and lets given size tires carry more load or carry the same load at a lower pressure for a better ride.

The XDA5 drive tire uses a regenerative tread design with 3-D matrix siping for added strength when the tread distorts in any direction. When the tire wears to 10/32-inch, an additional rain groove appears. It lasts as part of the tread pattern until 4/32 is reached. Available in low-profile and standard 11-inch height in both 22.5 and 24.5 sizes, the XDA5 carries a 5% to 10% price premium but is expected to yield 30% longer life.

— Paul Abelson is a former director of the Technology and Maintenance Council of the American Trucking Associations, a board member of Truck Writers of North America, and active in the Society of Automotive Engineers.