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Duramax CV Training

Complete Post Test to Recieve Certificate of Completion

A Refractometer measures what characteristic of DEF?*
- Specific gravity
- Cetane value
- Percentage to water
- Octane
- Freeze protection
When should you use a temperature correction chart during diesel fuel specific gravity testing?*
- At over 200 F
- At 60 F
- Below -20 F
- Depends on your Hydrometer
- You never need a chart
When performing a diesel fuel test, the specific gravity is found to be 32 on the API scale. What grade fuel is being tested?*
- Number 1 Diesel
- Number 2 Diesel
- Winter blend
- Gasoline
- DEF fluid
While testing for water in a diesel fuel sample, a large area of the sample turns blue on the bottom. What does this Indicate?*
- The diesel fuel meets standards
- There is some gasoline in the diesel
- The fuel has water or foreign material in it
- The fuel is old
- The sample tested is not diesel
Always buy diesel fuel with the best Cetane number you can find. A Cetane improver will move diesel fuel number by:*
- 3 to 5
- 10 to 20
- 20 to 30
- 30 to 40
- 50 to 60
Where would be the best place to look for water damage in a diesel fuel system?*
- The fuel tank
- The water in fuel sensor
- At the injectors
- The easiest part to inspect that restricts fuel flow
- The DEF injector
When testing a DEF sample, what would a good percentage number be?*
- 0
- 32.5
- 50.5
- 99.5
- 100
Proper Cetane values for diesel fuel should be around:*
- 0 to 5
- 20 to 30
- 40 to 50
- 60 to 80
- 80 to 100
Where is the best place on a vehicle to obtain a fuel sample?*
- Just before the primary fuel filter
- After the secondary fuel filter
- At the fuel rail
- At the fuel return line
- At the injector
A specific gravity API index of 60 would indicate the diesel fuel is:*
- Number 1 diesel
- Number 2 diesel
- Winter blend diesel
- Cetane
- Not diesel fuel
Please provide us with your email address in order to receive your test results and certificate of completion*
Name*
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