SYNTHETIC VS. MINERAL
Synthetic lubricants have become the established leader in long-life performance. But new technologies have heated up an old rivalry—with mineral oils.
OILS SLICK
Formulated for the new diesels, it turns out C1-4 lubes are better for everybody
LUBE AND LOAD
You can't fool with your engine oil, but you can know more about it.
FAQ: HEAVY-DUTY OIL FILTERS
Answers to frequently asked questions about heavy-duty oil filters from the Filter Manufacturers Council.
FAQ: DIESEL FUEL FILTRATION
Answers to frequently asked questions about heavy-duty diesel fuel filtration from the Filter Manufacturers Council.
FAQ: HEAVY-DUTY COOLANT FILTERS
Answers to frequently asked questions about heavy-duty coolant filters from the Filter Manufacturers Council.
A GREASE GLOSSARY
Ready reference -- here's Lubrizol's glossary of grease terms.
FUEL TEST: TWO DRIVERS, ONE KENWORTH
Two drivers take one Kenworth over the same route — who gets better fuel economy? And why? From the December 2005 issue.