Support By Model

Select from the following Detroit products. For classic 2-Cycle engines (Series 53, 71, 92, 149), visit the MTU Detroit Diesel 2-Cycle website.

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Maintenance Intervals

Detroit DT12

When you buy a Detroit™ product, you’re buying billions of miles of engineering excellence.

DT12 Maintenance Intervals

Maintenance Items


Service Functions

Oil Change

Trucks below 80,000 lbs. GCW: 3 years / 300,000 miles

Drain and Replace Oil

Oil Change

Trucks above 80,000 lbs. GCW: 2 years / 200,000 miles

Drain and Replace Oil



Detroit offers a standard 5 year / 750,000 mile warranty and a 3 year / 350,000 mile warranty on the clutch. Exclusions: CPCA and clutch - 3 years/350,000 miles; Yokes (sealing surface only) - 3 years/300,000 miles (follows drive-train warranty). Failure to comply with proper maintenance schedule (e.g. oil inspections, oil changes, etc.) may void warranty coverage.

Detroit Connect Portal

The Detroit™ Connect portal is easy-to-use, one-stop-shop for all vehicle performance data gathered, transmitted and analyzed by Detroit Connect.  The portal gives you access to insights delivered by  Detroit Connect Virtual Technician℠. The Detroit Connect portal will also give you access to new features, such as Remote Updates, and Analytics, available late 2017.

Detroit connect portal login


DDCSN serves as both a public customer website and secure service portal to access DETROIT branded product service and parts information, tools, training, and more. Here you can access a wide range of product literature such as operator mauals, warranty booklets, and even service bulletins. You can also find parts catalogs, sales and marketing programs, webinars, and much more.


DTNA Connect Portal

DTNA Connect is the starting point for working with all brands and franchises that fall under the Daimler Trucks North America umbrella: Detroit, Thomas Built Buses, SelecTrucks, Sterling, Freightliner, and Western Star. Here, you can access the full spectrum of online applications, resources and tools you need. Whether you use DTNA online resources to complete repairs, purchase parts, submit warranty claims, spec new vehicles or track the status of your truck orders, DTNAConnect streamlines the tasks and activities that are part of your daily work routine.

DTNA Connect Portal Login