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Maintenance Intervals

Detroit® DT12® On-Highway Series

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

DT12-HE: Highly Efficient Long Haul

Maintenance Items

Miles

Kilometers

Weight

80,000 lbs or less

80,000 lbs or less

Standard Drain Intervals

400,000

644,000

Drain Intervals with Maintenance System*

Up to 600,000

966,000

DT12-HE: Long Haul & Short Haul

Maintenance Items

Miles

Kilometers

Weight

Greater than 80,000 to 140,000 lbs

Greater than 80,000 to 140,000 lbs

Standard Drain Intervals

300,000

483,000

Drain Intervals with Maintenance System*

Up to 400,000*

644,000*

DT12-HE: Severe Duty

Maintenance Items

Miles

Kilometers

Weight

Greater than 140,000 lbs

Greater than 140,000 lbs

Standard Drain Intervals

180,000

290,000

Drain Intervals with Maintenance System*

Up to 180,000*

290,000*

DT12-H: Long Haul

Maintenance Items

Miles

Kilometers

Weight

80,000 lbs or less

80,000 lbs or less

Standard Drain Intervals

400,000

644,000

Drain Intervals with Maintenance System*

Up to 400,000*

644,000*

DT12-H: Short Haul

Maintenance Items

Miles

Kilometers

Weight

Greater than 80,000 to 140,000 lbs

Greater than 80,000 to 140,000 lbs

Standard Drain Intervals

300,000

483,000

Drain Intervals with Maintenance System*

Up to 400,000*

644,000*

DT12-HL: Long Haul

Maintenance Items

Miles

Kilometers

Weight

80,000 lbs or less

80,000 lbs or less

Standard Drain Intervals

400,000

644,000

Drain Intervals with Maintenance System*

Up to 400,000*

644,000*

*Maintenance System will automatically adjust maintenance intervals depending on multiple factors (transmission type, cooler type, field conditions, driving style, etc). See our Public Technical Literature page for more information. US & Canada Only.

On-Highway Warranty

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.

Maintenance Intervals

Detroit® DT12® Vocational Series

DT12®-V: Short Haul

Maintenance Items

Miles

Kilometers

Weight

Greater than 80k to 140k LBS

Greater than 80k to 140k LBS

Standard Drain Intervals

300,000

483,000

Drain Intervals with Maintenance System*

Up to 400,000

Up to 644,000

A85 Codes

A85-002 Pick Up and Delivery (Short Haul) and A85-016 Transfer Refuse

A85-002 Pick Up and Delivery (Short Haul) and A85-016 Transfer Refuse

DT12®-V: Severe

Maintenance Items

Miles

Kilometers

Weight

Greater than 140,000 LBS

Greater than 140,000 LBS

Standard Drain Intervals

180,000

290,000

Drain Intervals with Maintenance System*

Up to 180,000

Up to 290,000

A85 Codes

A85-027 Heavy Haul Service and all other "severe applications".

A85-027 Heavy Haul Service and all other "severe applications".

DT12-VX: Severe

Maintenance Items

Miles

Kilometers

Weight

Greater than 140,000 LBS

Greater than 140,000 LBS

Standard Drain Intervals

180,000

290,000

Drain Intervals with Maintenance System*

Up to 180,000

Up to 290,000

A85 Codes

A85-027 Heavy Haul Service and all other "severe applications".

A85-027 Heavy Haul Service and all other "severe applications".

*Maintenance System will automatically adjust maintenance intervals depending on multiple factors (transmission type, cooler type, field conditions, driving style, etc.) See our Public Technical Literature page for more information. US & Canada Only.

Vocational Warranty
Application GVW/GCW Warranty - Transmission
P&D < 110k lbs 36 mo / Unlimited
Construction < 140 lbs 36 mo / Unlimited
Transfer Refuse < 110 lbs 24 mo / Unlimited
Logging
< 140k lbs - DT12-V
< 250k lbs - DT12-VX
24 mo / Unlimited
Mining/Oil Field
< 140k lbs - DT12-V
< 250k lbs - DT12-VX
24 mo / Unlimited
Heavy Haul < 275 lbs 24 mo / Unlimited