CONTENTS / FEBRUARY 2021 p. 10 Maintenance: preventive, predictive, prescriptive P. 10 » O N T H E CO V E R Equipment How future vehicle technologies will shape maintenance By looking at commercial vehicle features available today, we can predict what advancements to expect in the future. » Safety system sensors overview » Advanced trailer technologies p. 16 In The Bay Why cooling system management is more important than ever Coolant contamination and general inattentiveness can result in damage to not only the engine, but also a diesel truck's aftertreatment system. » How an auxiliary coolant heater can help reduce engine and aftertreatment maintenance p. Auxiliary coolant heaters & maintenance reduction P. 18 22 VIEWS FROM THE EXPERTS 34 Management Explicit and implicit inspection By Joel Levitt SPRINGFIELD RESOURCES Shop Operations How mentorship programs can help combat the technician shortage 35 Economic Outlook Points to ponder when preparing for a recovery By Robert Dieli Implementing apprenticeship programs in fleet maintenance operations can serve to raise the qualifications and experience level of new technicians entering the workforce. MACKAY & COMPANY 50 Guest Editorial The case for internal tire balancing By Isabelle Oliver MARTINS INDUSTRIES Want to contribute? Contact us at editor@FleetMaintenance.com SPOTLIGHT ON... p. 28 Drivetrain Delivering on last-mile vehicles Maintenance practices for last-mile delivery vehicles are more important than ever with the rise of ecommerce sales and parcel deliveries. p. 32 Fluids & Filtration Alternative diesel fuel options for greener fleets A look at the benefits, impact, and future of biomass-based diesel fuels. 4 Fleet Maintenance | February 2021 Education and expectations for new techs P. 22 On the cover: Fleet Maintenance illustration: Photo from gremlin | 1201457159 and cherezoff | 1077994504 | Getty Images D E PA R T M E N T S FROM THE EDITORS 8 Uptime Will your independent parts distributor become obsolete? 36 Fleet Parts & Components What's new in products for more efficient fleet operation. 39 Tools & Equipment A roundup of the latest tool and equipment offerings. 49 Classifieds