Even with potential fuel economy gains, fleets have been slow to adopt the new FA-4 engine oils. Experts from ATA's Technology & Maintenance Council explore some of the reasons why fleets seem to be waiting.
How to Purchase, Store & Handle Diesel Exhaust Fluid
Diesel engine vehicles can be damaged by using low quality diesel exhaust fluid (DEF). Repairs can be very expensive with long downtime possible, and damage could void the manufacturer’s warranty.