Can I get rid of my used engine oil by adding it to diesel fuel?
Adding used engine oil to diesel fuel used to be a common practice. However, it almost
certainly results in a blend that does not meet diesel fuel specifications. One or more of
these properties may be too high: 90 percent boiling point, sulfur content, ash, water
and sediment, viscosity, and carbon residue. A diesel fuel/used oil blend may not be sold
as diesel fuel and we recommend against using it as a diesel fuel.
In California, the addition of used engine oil to diesel fuel is a violation of hazardous
waste regulations. Diesel fuel users in other areas who may consider this practice should
check for any applicable regulations.
This was copied from Chevron Web site... Come to find out it illegal to mix WEO/WMO in diesel fuel in California. Also once again even Chevron mentions that putting WEO/WMO in diesel fuel is a common preactice but suggest away from it. Being of the same problems I been talking about...
ASH CONTENT (Ash cotent is to high!)
Ash - Minor - Can damage fuel injection system and cause combustion chamber deposits. Causes damage in the long term...
CARBON RESIDUE (Blow by gasses / carbon)
Carbon Residue Minor Measures coking tendency of fuel; may relate to engine deposits. Causes damage in the long term...
SEDIMENT (All the wear metals/debris)
Water and Sediment - Minor - Affect fuel filters and injectors. Can cause Immediate filter plugging and/or fuel system damage...
VISOCITY (Too thick)
Viscosity - Bulk - Affects fuel spray atomization and fuel system Immediate and lubrication. It also affects fuel system leakage. Causes damage in the long term...
Cummins Centinel get away from this by keeping the mix ratio of WEO/WMO very low compared to the diesel fuel. Typically less than 5% by volume for WEO/WMO. 5% is roughly 1.75 gallons of WEO/WMO for 35 gallons of diesel fuel. This way the Visocity, Ash, Carbon residue, and debris are controlled and kept to a minimum. This also keeps the burn characteristics of the fuel in a usable range without changing dramatically... ;)
ASH CONTENT (Ash cotent is to high!)
Ash - Minor - Can damage fuel injection system and cause combustion chamber deposits. Causes damage in the long term...
CARBON RESIDUE (Blow by gasses / carbon)
Carbon Residue Minor Measures coking tendency of fuel; may relate to engine deposits. Causes damage in the long term...
SEDIMENT (All the wear metals/debris)
Water and Sediment - Minor - Affect fuel filters and injectors. Can cause Immediate filter plugging and/or fuel system damage...
VISOCITY (Too thick)
Viscosity - Bulk - Affects fuel spray atomization and fuel system Immediate and lubrication. It also affects fuel system leakage. Causes damage in the long term...
Cummins Centinel get away from this by keeping the mix ratio of WEO/WMO very low compared to the diesel fuel. Typically less than 5% by volume for WEO/WMO. 5% is roughly 1.75 gallons of WEO/WMO for 35 gallons of diesel fuel. This way the Visocity, Ash, Carbon residue, and debris are controlled and kept to a minimum. This also keeps the burn characteristics of the fuel in a usable range without changing dramatically... ;)