Typical for Cummins powered service trucks and PTO usage set-up. The 50% PTO time (increased fuel usage) boosted sales of auxiliary diesel power packs. Going APP adds an additional $18-28K on the price of a service truck; all emissions related after Tier1.My service truck does this automatically, raising the RPMs to 1050 for 5 minutes, on 15 minute intervals.
90k miles on the service truck, and one time, the DEF doser nozzle needed cleaned, and, one time, the EGR valve passage needed cleaned. The only other check engine light events were for a turbo actuator electrical, and a failed exhaust manifold gssket.
IMO, most mid-range is dry vans, reefers and delivery trucks. All of the used rigs I've looked at shut down after idling 10-12 minutes.
Emissions controls need exhaust heat to operate per design.
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