Fact Sheet

Diesel Exhaust Fluid (DEF)
Guidance

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o Nonroad equipment will now have no performance impact for 36 hours,
saving farmers hundreds of hours and millions of dollars.

MOTOR COACHES

Category

Init al

Secondary

Final





Before















Timing Level

Timing Level

Timing

Level

Timing

Level

Motor
Coaches

3,000 miles/ 10%Torque
40 hours Reduction

n/a

10,500 miles /
200 hours

50 mph

4 hours

5 mph

HD TRUCKS

Category

Initial Secondary Final

Before

Timing

Level Timing

Level Timing

Level

Timing

Level

HD Trucks

650 miles/10
hours

15%Torque 4,200 miles/
Reduction 80 hours

30% Torque 8,400 miles /
Reduction 160 hours

25 mph

4 hours

5 mph

HD PICKUPS AND LD CARS

Category

Initia

1 Secondary Final

Before

Timing

Level Timing

Level Timing

Level

Timing

Level

HD Pickups
and Light
Duty Cars

n/a

n/a n/a

n^a 4,200 miles/
80 hours

45 mph

4 hours

5 mph

NONROAD

Category



ll

initial

Secondary Final

Before



Timing

Level

Timing

Level Timing

Level

Timing

Level

Nonroad
Equipment

36 hours

25%Torque
Reduction*

n/a

n/a 100 hours

50% Torque
Reduction**

4 hours

Idle Only

*Nonroad constant speed engines (e.g., agricultural pumps) and gensets do not have an initial inducement step as any torque reduction may
limit product functionality.

**Nonroad equipment can be restarted with full power 3 times for up to 30 minutes after inducement.

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