Cummins Service Products Catalog – Tool 3376317Fuel/Lube Oil Blenders


Engine Family:

Cummins Engine Company’s blending recommendation.

Cummins Engine Company allows blending of lubricating oil with fuel used in their engines, except those equipped with an oxidation catalyst (catalytic converter) (e.g. M11’s used in transit buses and B’s and C’s used in automotive applications). Cummins Engine Company permits a maximum of 5% used lubricating oil to be blended with fuel. This helps to reduce operating costs and aids in disposal of used engine oil. The blending of new lubricating oil to raise viscosity is also permissible. This helps to increase the viscosity of lighter fuels to acceptable levels.

If blended fuel used in motor vehicles, as defined by EPA, in on-highway applications exceeds the maximum sulfur content, federal law has been violated and penalties can be assessed.

To insure that blended fuel complies with the law, the following procedure must be followed. Both the diesel fuel and lubricating oil must have their sulfur content determined by a qualified laboratory using the testing method specified in ASTM D2622 (American Society of Testing and Materials Standard). Using the values for sulfur contents of the fuel and oil, find the appropriate blend factor from the table below. Once the correct blend factor has been determined, multiply this by the volume for fuel to be blended, the result is the amount of this oil that can be blended with this fuel and remain within legal limits. Note: State or local regulations may prohibit the blending of lubricating oil with fuel. Check state and local regulations. See example below for proper mixture.

Blend Factor Table

To determine the blend factor, locate the column in the table that corresponds to the sulfur content of the fuel, then find the row that corresponds to the sulfur content of the oil. The correct factor will be the value at the intersection for the row and column.

As an example, consider 50,000 gallons of fuel with a sulfur content of 0.04% by weight and lubricating oil with a sulfur content of 0.5 by weight. Using the below table shows a blend factor of 0.009. Multiply this by the amount of fuel to be blended:

Gallons of oil that can be blended = 50,000 (gallons fuel) X 0.009 (factor from table) = 450 (gallons of oil). [50,000 X 0.009 = 450] Therefore, 450 gallons of this oil can be blended with 50,000 gallons of this fuel and remain within legal limits for sulfur content.

The values in the blend factor table have been calculated to account for differences in fuel and lubricating oil density and measurement error. Due to the accuracy of the test for sulfur content, it is not safe to blend lubricating oil with fuel that has a sulfur content above 0.045% by weight.

Lube Oil % Sulfur by Wgt. Fuel % Sulfur by Weight
0.005 0.010 0.015 0.020 0.025 0.030 0.035 0.040 0.044
0.10 0.612 0.536 0.459 0.383 0.306 0.230 0.153 0.077 0.015
0.15 0.321 0.281 0.241 0.201 0.160 0.120 0.080 0.040 0.008
0.20 0.217 0.190 0.163 0.136 0.109 0.081 0.054 0.027 0.005
0.25 0.164 0.144 0.123 0.103 0.082 0.062 0.041 0.021 0.004
0.30 0.132 0.116 0.099 0.083 0.066 0.050 0.033 0.017 0.003
0.35 0.110 0.097 0.083 0.069 0.055 0.041 0.028 0.014 0.003
0.40 0.095 0.083 0.071 0.059 0.047 0.036 0.024 0.012 0.002
0.45 0.083 0.073 0.062 0.052 0.042 0.031 0.021 0.010 0.002
0.50 0.074 0.065 0.056 0.046 0.037 0.028 0.019 0.009 0.002
0.55 0.067 0.058 0.050 0.042 0.033 0.025 0.017 0.008 0.002
0.60 0.061 0.053 0.046 0.038 0.030 0.023 0.015 0.008 0.002
0.65 0.056 0.049 0.042 0.035 0.028 0.021 0.014 0.007 0.001
0.70 0.051 0.045 0.039 0.032 0.026 0.019 0.013 0.006 0.001
0.75 0.048 0.042 0.036 0.030 0.024 0.018 0.012 0.006 0.001
0.80 0.045 0.039 0.033 0.028 0.022 0.017 0.011 0.006 0.001
0.85 0.042 0.037 0.031 0.026 0.021 0.016 0.010 0.005 0.001
0.90 0.039 0.034 0.030 0.025 0.020 0.015 0.010 0.005 0.001
0.95 0.037 0.033 0.028 0.023 0.019 0.014 0.009 0.005 0.001
1.00 0.035 0.031 0.026 0.022 0.018 0.013 0.009 0.004 0.001

The Cummins Service Products Company Fuel/Lube Oil Blender is a remarkable device that quickly, safely, economically and conveniently bends used lubricating oil with diesel fuel for use in the engine without affecting the engine’s performance and fuel economy.

The Blender can be used in a wide variety of diesel engine applications, including on-highway, construction, agriculture, marine and stationary power units. The Blender can be a valuable asset to cost savings in a number of ways. It provides a method of disposing of used lube oil that is within regulations while offsetting high fuel costs by utilizing the used oil as a fuel supplement.

The Blender is both quick and simple to use and is compatible with a majority of makes and models of diesel engines. Equipping of the engine with a quick disconnect hose assembly, which replaces the oil pan plug, will streamline the operation. The quick disconnect access end can then be mounted in a convenient location using a special mounting bracket.

To blend the engine’s used lubricating oil for utilization as a fuel supplement, the Blender’s suction hose is attached to the quick disconnect fitting. Then the fuel suction hose and the blended fuel return hose are inserted into the unit’s fuel tank.

Once the hoses are in place, the Blender performs its operation automatically with the push of a button. It shuts itself off when all of the lube oil in the crankcase has been filtered and blended with fuel oil then pumped into the fuel tanks. Operation is simplified further by a light which indicates that the Blender’s power system is running.

The quick disconnect hose and fittings replace the oil pan plug to streamline and speed operation. Once the fuel suction and blended fuel return hoses are placed in the fuel tanks, the pump operates without supervision.

A handy running light indicates the Blender’s power system is functioning properly.

Safety is also an important feature of the Blender. Since manual removal of the oil pan plug is eliminated through the use of the quick disconnect hose assembly, the danger of a person being burned by hot lube oil during the process is also eliminated.

The lube oil is thoroughly filtered by the Blender prior to being blended with fuel oil to remove any impurities. The safety shutdown switch will turn the unit off if pressure is lost. This assures that blending occurs in the prescribed ratio determined by fuel systems experts to be necessary to insure a homogenous fuel mixture. Topping off fuel tanks after blending will insure that the maximum recommended concentration of 5% used lube oil will not be exceeded.

The Blender provides a solution to help fuel costs and drain oil disposal problems in one simple unit. Now a wide range of diesel engine applications can benefit from the Blender. Why not take advantage of fuel/lube oil blending and start increasing your profits now?

Part No. Description
3376317  Lube Oil Blender 115V/60 Hz. Blender
3376362  Lube Oil Blender 230V/50 Hz. Blender
3822387  Lube Oil Blender 115V/60 Hz. Blender

NOTE: 3822387 Blender is less wheels and handle for stationary applications such as marine and certain industrial applications.

Ref. No. Detail No. Description
Replacement parts for 3376317 and 3822387 Blender
1 3376759  Gear Pump (Lube Oil & Fuel Oil)
2 3823454  Gear Pump Rebuild Kit
3 3375813  Flange Mount Motor (115 V/60 Hz.)
4 3375817  Pressure Switch 
5 3375600  Suction Screen 
6 3375404  Fuel Filter 
7 3375453  Fuel Filter Head 
8 3376300  Vacuum Gauge 
9 3376328  Push Start Switch 
10 3376778  On-Off Switch w/overload 
  3376329  Overload 
11 3823452  Fuel Mixing Tube 
12 3823453  Oil Mixing Tube 
Replacement parts for 3376362 Blender are the same as above except the motor
  3376379  Flange Mount Motor (230V/50 Hz.) 

Several oil pan adapter kits and quick connect fittings are available to make it cleaner and more productive when connecting the blender to the oil pan. These must all be ordered separately as desired.

Part No. 3375405 Female Quick Disconnect. This is attached to the Blender hoses and becomes a permanent part of the Blender.

Order Flow Adapter Kits or hoses so that the male quick disconnect can be located conveniently along a frame rail or attached to the side of the engine.

Last Modified:  31-Jul-2003