1. What are the 2001/2002 Dodge Ram Turbo Diesel Ratings?
2. Are fuel or oil additives recommended for use with the Cummins 24-Valve Turbo Diesel?
3. When should I adjust the valves?
4. Does Cummins and Mopar sell uprate kits for the Cummins engine in the Dodge Ram?
5. How many gallons of oil does the Cummins engine take during an oil/filter change?
6. Where can I purchase the E Brake from Jacobs?
7. Do I need to use a coolant additive in my Dodge Ram?
8. Can a Cummins Distributor perform warranty work on my Dodge Ram?
9. What kind of advice can you give me about truck options for my Dodge Ram?
10. What differentiates diesel engines from other kinds of engines?
11. What maintenance is required with the 24-Valve Turbo Diesel?
12. Are there any uprate kits for my 24-valve engine?
13. What kind of fuel mileage can I expect with my Dodge Ram?
14. Can an exhaust brake be used on the 24-valve engine?
15. What differences can I expect in operation between the new 24-valve engine and the previous style engine?
16. What guidelines do I follow to properly break in my Cummins engine?
17. How many miles does the Cummins engine require for break-in?
18. I have friends who are members of the Cummins Power Masters Road Club, Cummins Power Boosters Road Club and Midrangers...what are the benefits of joining?
19. I have a Dodge/Cummins Turbo Diesel and wonder if I should add a second fuel filter for more protection?
20. What does antifreeze do, and what are Cummins recommendations on concentration?
21. Will the Cummins engine be an option in the next generation Ram 2500 and 3500 pickup?
22. How many Cummins engines have been sold in Dodge Rams?
23. Is it OK to use synthetic oil with my Cummins engine?
24. Does DaimlerChrysler authorized the use of high-flow aftermarket air filters such as K&N with my Cummins engine?
25. What is the warranty on the Cummins engine?
26. What is the High Output Cummins Engine? What changes were made to the HO engine?

1. What are the 2001/2002 Dodge Ram Turbo Diesel Ratings?
There are three engines Cummins provides for the Dodge Ram pickup for 2001/2002:

1. Standard 5-speed Manual Transmission: 235hp / 460 lb.-ft torque.
2. High Output 6-speed Manual Transmission: 245hp / 505 lb.-ft torque.
3. Automatic Transmission: 235hp / 460 lb.-ft torque.

2. Are fuel or oil additives recommended for use with the Cummins 24-Valve Turbo Diesel?
Fuel or oil additives are not necessary on the 24-valve engine, provided factory recommended oil and fuel specifications are followed. Consult your owner's manual for proper guidelines. 

3. When should I adjust the valves?
For the 12-valve engine in the Dodge Ram, the valves should be adjusted initially at 24,000 miles and thereafter every 48,000 miles.  For the 24-valve engine in the Dodge Ram, the initial valve adjustment should be completed at 150,000 miles.

4. Does Cummins and Mopar sell uprate kits for the Cummins engine in the Dodge Ram?
Yes, but there are different uprate kits for various model year engines. For the 1998.5-2000 model year 24-valve electronic engines with manual transmissions, Cummins and Mopar sell an ECM (computer) upgrade that increases torque to 505 lb.-ft. Note, however, that this is not available for the 2001 model year 235 HP engines.

For the 1994-1998 12 valve mechanical engines, you can purchase an uprate kit that contains new injectors, fuel pump, and waste-gate actuator to increase the performance of the engine to 230 hp and 605 lb.-ft torque.

5. How many gallons of oil does the Cummins engine take during an oil/filter change?
2.75 US gallons, (11 quarts) or 10.41 liters.

6. Where can I purchase the E Brake from Jacobs?
Any Cummins distributor can sell and install the E Brake from Jacobs.

7. Do I need to use a coolant additive in my Dodge Ram?
We do not recommend an additive for the Cummins engine used in the Dodge Ram. Coolant additives are used to protect liners from cavitations and since the engine in the Dodge Turbo Diesel has no liners, it does not require an additive.

8. Can a Cummins Distributor perform warranty work on my Dodge Ram?
Cummins Distributors can perform repairs on your 12- or 24-valve Dodge Ram Turbo Diesel engines, but they cannot do warranty work. Daimler Chrysler covers all the warranty work on the Cummins engines in the Dodge Ram. 

9. What kind of advice can you give me about truck options for my Dodge Ram?
Since Cummins only manufactures the engine, we recommend contacting your local Dodge dealer for this information.

10. What differentiates diesel engines from other kinds of engines?
The diesel engine was designed and patented in 1892 by Rudolf Diesel. In the early 1920s, Mr. Clessie Cummins, one of Cummins Engine Company's founders, refined the Diesel design and developed engines to be used on-highway in the USA. Here are some of the principles and components that go into making diesel power so efficient:

Higher Compression Ratio. "The compression ratio is higher, there is more power." Technically speaking, the compression ratio of an engine is the comparison of the total volume of the cylinder at the bottom of the piston's stroke divided by the volume of the cylinder remaining at the top of the piston's stroke. Since we are familiar with gasoline engines, let's quickly discuss their compression ratios and a condition that spells disaster in a gasoline engine, detonation or "pinging."

Gasoline Ratios. Serious damage to gasoline engines can result if you attempt to run a high compression ratio with low-octane fuel. Detonation or "pinging" is the ignition of the fuel due to the high temperature caused by a high compression ratio/high pressure developed by a given design. The fuel is ignited prior to the spark of the spark plug resulting in rapid uncontrolled burning. The appropriate maximum compression ratio for a gasoline engine in race trim is 14:1. Most "non-racing," low-octane compression ratios used in automobiles are less than 9:1.

Diesel Ratios. Remember, the diesel is a "heat engine," using heat developed from the compression of air. High compression ratios (ratios ranging from 14:1 up to 20:1) are possible since air only is compressed. The hot compressed air is sufficient to ignite the diesel fuel when it is finally injected near the top of the compression stroke. A high compression ratio equals a greater expansion of the gases following ignition and a higher percent of the fuel's energy is converted into power! The diesel compression ratio is higher, there is more power!

The Injection Systems. "It's in the injection system." Diesel designed the "heat engine" using the injection of fuel at the last moment to ignite the compressed air. Understanding the heart of the diesel, the fuel pump, is another key to answering the fuel-efficiency question.

The Gasoline Engine. A gasoline engine is stochiometric. Stochiometric: the quantitative relationship between two or more substances, especially in processes involving physical or chemical change. With a gasoline engine there is a stochiometric equation of 14 parts of air to one part of fuel. Remember, always 14:1; whether at idle or full throttle, the fuel and air are mixed outside the cylinders in a carburetor or injection manifold and the mixture is introduced via the intake valve. 14:1 always.

The Diesel Engine. Fuel and air in the diesel design are not premixed outside the cylinder. Air is taken into the cylinder through the intake valve and compressed to make heat. Diesel fuel is injected near the top of the piston's stroke in an amount or ratio corresponding to the load on the engine. At idle, the air-to-fuel ratio can be as high as 85:1 or 100:1. At full load the diesel still boasts a miserly 25:1 or 30:1 ratio! It is in the injection system.

The Fuel Pump. The fuel pump used on the Cummins 24-Valve Turbo Diesel is a Bosch VP-44, electronically controlled, rotary fuel pump, which has the ability to vary fueling and injection timing based on the input from an electronic control module (ECM). The Cummins-developed ECM receives information from various sensors and controls on the engine and translates that into specific fuel quantity and timing commands which are sent to the injection pump. The injection pump is connected to the centrally located injectors via high pressure tubes. The high-pressure opens the injector nozzles, allowing fuel to pass into the combustion chamber. The fuel pump used on the 1994-1998 Dodge Turbo Diesel pickup is a Bosch P7100 in-line fuel pump. Think of it as a mini in-line six-cylinder engine and it's easy to understand its principle of operation. Six plunger pumps actuated by the pump camshaft send fuel pulses through six high-pressure fuel lines to the injectors. The pressure opens the injector valve allowing fuel to pass into the combustion chamber. Metering of the fuel (at idle 65:1 or full load 25:1) was controlled by a fuel rack and gears which rotate a metering helix to allow fuel into the six plunger pumps. The fuel pump on pre-'94 trucks was a Bosch VE rotary-style fuel pump. Think of this pump like a mini automobile spark distributor. A rotary "head" sends fuel pulses through the high-pressure fuel lines to the injectors. Just like the in-line fuel pump system, the pressure opens the injector valve and fuel is injected.

Fuel BTUs. "The btu value of diesel is greater." Quite true, the btu, or British thermal unit, for diesel fuel is 130,000 btu's per gallon and a weight of 7.4 lb/gal. The value for gasoline is 117,000 btu's and a weight of 6.0 lb/gal. If we go back to our basic physics rules for energy, you'll note the fuel in the tank has potential for work if it is injected into the cylinders and, combined with the compressed heated air, ignited. The piston is forced downward, the crankshaft rotates, the wheels turn. The diesel design (the "heat engine"), compression ratios (the "heat engine"), the fuel injection system (allowing 85:1 down to 25:1 air-to-fuel versus gasoline at 14:1) and fuel btu's (diesel fuel has more power), all these diesel attributes add up to more miles per gallon of fuel!

Heavy-Duty Structure. Final notes: We've covered the principle of diesel operation and the high compression ratios needed to make the heat for diesel engine combustion. The high compression ratio causes the engineers to design, test and manufacture the block, heads, head bolts, crankshaft, connecting rods, rod bolts, pistons, piston pins, etc., with greater structural capacity. In other words, diesels are inherently heavy in relation to their gasoline brothers. Take for example the B Series engine used in the Dodge pickup. It is 970 lb for the 359 cubic inch turbo diesel engine versus 540 lb for the identical-sized Dodge Magnum V-8 gasoline engine. On the other hand, as a result of the heavier components, the diesel, particularly the in-line six-cylinder, is significantly more durable than its gasoline counterpart. Looking back at the first engine designed by Clessie Cummins in the 1920s, it was a monster at 400 lb per horsepower produced. Although diesels still tend to weigh more than gas engines, it's obvious we've made a lot of progress in 70 years.

11. What maintenance is required with the 24-Valve Turbo Diesel?
The only maintenance required is regular replacement of oil and oil filters at 7,500 miles and fuel filter replacement at 15,000 miles. The air filter should be replaced when the "Filter Minder" installed on the air cleaner box indicates a dirty filter. Valve adjustment is not required until 150,000 miles.

12. Are there any uprate kits for my 24-valve engine?
You can purchase a Dodge Ram Turbo Diesel Uprate Kit from your local Cummins distributor or Daimler/Chrysler dealer and boost your pulling power to 505 lb/ft of torque. This kit will only work on 1998.5 and newer Dodge Turbo Diesels with a with 5-speed manual transmission.

13. What kind of fuel mileage can I expect with my Dodge Ram?
Cummins builds the diesel engine for Dodge but has no mpg tank mileage figures for the engine. Mpg tank mileage will vary depending on truck model, body style, aerodynamics, speed, load, wind, etc. Previous Dodge customers have reported better mileage for two-wheel drive versus four-wheel drive.

14. Can an exhaust brake be used on the 24-valve engine?
Yes, the new manual transmission 24-valve engine was designed with the exhaust brake in mind. Replacement of the exhaust valve springs will not be required as it was on some models of the previous style engine. (Please note: Current 12-valve-compatible E Brakes designed for '89-'98 model Dodge Rams should not be installed on '98 and later 24-valve electronic engines. Doing so can cause serious damage to the engine.)

15. What differences can I expect in operation between the new 24-valve engine and the previous style engine?
In addition to more power throughout the operating range, you should notice smoother idle, reduced smoke during start-up and excellent drivability, letting you shift where and when you want to. Check out all of this new diesel's features and ratings.

16. What guidelines do I follow to properly break in my Cummins engine?
The only requirements when breaking in your Cummins engine is that you keep the fluids topped off and use a standard petroleum-based oil for the first two drain intervals. Cummins also recommends not idling the engine for more than 5 minutes and to work the engine during the break-in period.

17. How many miles does the Cummins engine require for break-in?
In general, 5000 miles. This depends on the type of driving the truck is subject to; hauling or towing a load will shorten the break-in period. Light duty hauling or "babying" the engine can delay full engine break-in for up-to 20,000 miles.

18. I have friends who are members of the Cummins Power Masters Road Club, Cummins Power Boosters Road Club and Midrangers...what are the benefits of joining?
At supporting distributors, our club members receive:

• 10% discount on:*
  - Genuine Cummins parts
  - Cummins ReCon® parts
  - Onan parts
  - Fleetguard® filters
  - Valvoline® Premium Blue® oil
  - Labor
• Quarterly newsletter
• Bi-annual clinics
• 1-year Good Sam Club membership
• Express check-in for repairs
• Nationwide engine road-side assistance
  
  *Not available to fleets or with any other specials.

Nobody knows diesels like Cummins. Cummins B & C Series engines are the preferred diesel power in recreational and pleasure vehicles. Owning a Cummins engine puts you with an elite group of individuals. And now you can belong to an elite club that is comprised only of Cummins owners just like yourself.
It doesn't matter if you own an RV, motor coach or pickup truck, you're going to want to belong to the "Cummins Power Masters Road Club."

GREAT SAVINGS. All club members get big discounts at participating distributors on Cummins new, ReCon (remanufactured) and Onan parts. Wait - that's not all, big savings are also provided on Fleetguard filters, Valvoline® Premium Blue® oil, and repair labor. You're a Very Important Person when you belong to the "Cummins Power Masters Road Club."

GET THE NEWS. When you join, you'll receive a quarterly newsletter specially written for our club members. This newsletter provides the latest information on Cummins engines and their uses. We've even provided a section on the care and feeding of your big horse... power diesel. You'll find this newsletter both entertaining and informative.

LEARN FROM THE PROS. Twice a year, club members are invited to attend our end-user clinics. These clinics provide you with hands-on training on the care and maintenance of your Cummins engine. Learn about the latest changes and upgrades, and how they apply to your engine. Also, see the newest accessories available for that workhorse of yours.

OTHER BARGAINS. To make sure that you're treated right when somewhere other than our shops, we'll provide a free one-year subscription to the Good Sam Club.* Good Sam Club members are provided a host of benefits at participating locations that include:

• 10% savings on parts and accessories
• 10% on LP gas
• Free "Highway" magazine
• Trip routing service
• and much, much more
  
  *Available only to first-time Good Sam members.

DON'T WAIT ON REPAIRS. Nothing can ruin a vacation faster than vehicle trouble. As a club member you have the support of all sponsoring distributors to help you out of those trying times. All members are given priority at our locations. We will begin troubleshooting your engine problem within one hour of arrival at our locations, during normal business hours, or the repair is FREE.

ROADSIDE ASSISTANCE. Feel secure in knowing that emergency service is just a phone call away. Our nationwide phone center is open 24 hours a day, 7 days a week, 365 days a year. With one phone call you'll be directed to the nearest location anywhere in North America. Supporting distributors will even arrange wrecker service if needed.

19. I have a Dodge/Cummins Turbo Diesel and wonder if I should add a second fuel filter for more protection?
It should not be necessary to add a fuel/water separator since the Dodge fuel filters are equipped with a water separator. Adding another filter might cause too much fuel inlet restriction and, thus, a low-power problem.

20. What does antifreeze do, and what are Cummins recommendations on concentration?
The primary purpose of antifreeze is to lower the freeze point of the coolant. Additional performance characteristics of coolants that are affected by the use of antifreeze include boiling point and vapor pressure. A 50/50 mixture of antifreeze and water provides optimum boiling point and freeze point protection for engines. Antifreeze concentration in excess of 60 percent must never be used since it increases the possibility of forming cooling system gel which results as silicates precipitate out of solution. However, concentration of antifreeze less than 40 percent increases the possibility of coolant freezing and liner pitting. Therefore, Cummins recommends an antifreeze range of 40 percent to 60 percent. Fluids presently used in antifreezes are ethylene glycol (EG) and propylene glycol (PG). Diesel engine antifreezes have primarily used EG products because they are less expensive than PG products. Some antifreeze applications require less toxic substances which have driven the use of PG. Engine-related applications of PG primarily have been applications where environmental concerns have disallowed the use of the more common EG products. For more information, refer to Cummins Coolant Requirements and Maintenance, Section 7, Bulletin 3666132.

21. Will the Cummins engine be an option in the next generation Ram 2500 and 3500 pickup?
Yes, the Cummins will be the exclusive diesel engine option in the next generation Dodge Ram 2500 and 3500 series pickup truck launching in the 2003 model year.

22. How many Cummins engines have been sold in Dodge Rams?
Over 800,000 since the 1989 Model Year.

23. Is it OK to use synthetic oil with my Cummins engine?
Cummins recommends that you not use synthetic motor oil during the break-in period of 5000-20,000 miles, based on the type of driving, to allow proper seating of the piston rings. Beyond that mileage it is OK to use synthetic oil.

24. Does DaimlerChrysler authorized the use of high-flow aftermarket air filters such as K&N with my Cummins engine?
No. DaimlerChrysler and Cummins do not recommend the use of increased flow air filters such as K&N, because they can allow contaminants into the intake that can ruin an engine (scoring the sides of the pistons, etc.)

25. What is the warranty on the Cummins engine?
5 years or 100,000 miles, whichever comes first. It's important to note that the warranty is handled by DaimlerChrysler, not Cummins Inc.

26. What is the High Output Cummins Engine? What changes were made to the HO engine?
The High Output Cummins engine is a new rating launched in January 2000 for the Dodge Ram. It produces 245hp and 505 lb.-ft torque. To create and handle the high output the rating this engine has different components:

• Controls: new software instructing fuel pump to deliver more fuel.
• Fuel System: VP44 fuel pump components changed to allow for increased fuel delivery.
• Injectors: Changed to allow for increased fuel delivery.
• Pistons: New design for higher 17:1 compression ratio-
• Head: powdered metal valve seat inserts for improved Durability.
• Flywheel: larger to match to larger diameter clutch for handling higher torque output.

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