KELTRACK Trackside Freight Friction Modifiers have been specifically designed for extended carrydown in freight rail operations. Maximizing carrydown optimizes value by requiring less application equipment to cover an operating territory. Consequently, the product is able to effectively achieve significant benefits of increasing rail life, while reducing fuel consumption, lateral forces, rail corrugations, and derailment potential. KELTRACK Trackside Freight is applied through the PROTECTOR Series Trackside Systems to cover areas of track with high economic returns. By co-developing the product and the delivery equipment we can provide a comprehensive solution that functions as one coordinated unit.


  • Increased Rail Life
  • Reduced Fuel Consumption
  • Reduced Lateral Forces
  • Reduced Rail Corrugations
  • Reduced Derailment Potential
Formulation Options Freight / Transit
Available Sizes 19 L (5 US gallons) Pail or 1000 L Tote
Fire Safety  Non-Flammable
Odor Slight Odor
Freezing Point (°C)   -6 (-16) Freight (LT) / -6 (Transit)
Viscosity, cP at 25°C 22,700-24,700 (17,000-19,000) Freight (LT)
Friction Levels      0.30 to 0.40 µ
Carry Distances  1 to 2 miles depending on Grade
Application Rate   0.5 litre/1000 axles



KELTRACK Trackside Freight ER Friction Modifiers have special chemistry to boost the carrydown distance over the standard KELTRACK Trackside Freight product, while maintaining the intermediate coefficient of friction. Customers can choose to apply less material over the same distance, or apply the same amount of material and cover twice the distance. The additional chemistry required to achieve this extended carrydown results in a higher unit volume price, but an overall savings to the customer on their total Friction Modifier spend.


  • Increased Rail Life
  • Reduced Fuel Consumption
  • Reduced Lateral Forces
  • Reduced Rail Corrugations
  • Reduced Derailment Potential
Available Sizes 19 L (5 US gallons) Pail or 1000 L(264 US Gallon)Tote
Fire Safety Non-Flammable
Odor  None
Freezing Point (°C)  -6 (-16) Summer (Winter)
Specific Gravity at 25 °C 1.05 – 1.08
Friction Levels 0.30 to 0.40 µ
Carry Distances 2 to 4 miles depending on Grade
Application Rate  0.25 litre/1000 axles



KELTRACK® Trackside Transit™ Friction Modifiers are specifically formulated to provide effective noise and corrugation control on Transit systems. KELTRACK® Friction Modifiers have positive friction properties – where friction levels increase asymptotically as creep increases.  This fundamental property of a true friction modifier is responsible for mitigating stick slip oscillations at the wheel/rail interface which cause wheel squeal. The inherent intermediate friction levels also reduces the flanging forces thereby reducing flange noise. Extensive testing has verfieid that KELTRACK® Trackside Transit™ is also very effective for mitigating the onset of short pitch corrugations.


  • Reduce Wheel Squeal & Flange Noise
  • Reduced Rail Corrugations
  • Reduced Lateral Forces
  • Reduced Derailment Potential
Formulation Options Freight/Transit
Available Sizes 19 L (5 US gallons) Pail or 1000 L Tote
Fire Safety Non-Flammable
Odor None
Freezing Point (°C)  -6 (-21)
Specific Gravity at 25 °C 1.07 – 1.09
Friction Levels 0.30 to 0.40 µ
Carry Distances 200 to 500 meters typical (curve specific solution)
Application Rate   0.5 litre/1000 axles



KELTRACK® AutoPilot is used exclusively in LB Foster’s AutoPilot car mounted or locomotive mounted spray systems. KELTRACK® AutoPilot has been formulated to be sprayed from a nozzle and dry quickly in the wheel/rail interface. Because KELTRACK® AutoPilot has intermediate coefficient of friction, it is desirable to leave material behind the direct applying train to provide fuel savings on following train. This effect has been demonstrated in field testing and results in a higher capital utilization of the application equipment. 

Available Sizes   19 L (5 US gallons) Pail or 1000 L Tote
Fire Safety Non-Flammable
Odor      None
Freezing Point (°C)  -6 °C (21 °F)
Specific Gravity at 25°C  1.08 – 1.10
Friction Levels  0.30 to 0.40 µ
Multiple Train Effect 2 to 3 trains
Application Rate  0.035 to 0.06 litres/mile/rail



Through our numerous partnerships with grease manufacturers, L.B. Foster offers a wide range of products to suit your needs. Our unmatched level of industry experience can help us to determine the optimal grease for any system or problem.


L.B. Foster’s Rail Curve Grease is a high-performance grease designed with innovative oils to provide efficient lubrication and protection under a comprehensive set of performance requirements. Field testing has shown this grease to provide the lowest friction level on the guage face of the rail at the furthest distance. Using this premium grade grease allows customers to space applicators further apart resulting in lower capital and maintenance costs.


  • Increases overall system efficiency
  • Reduces rail/wheel wear
  • Reduces maintenance costs
Operating Temperature Range (°C) -40 to 120 -35 to 120
NLGI Grade 0 1
Drop Point (°C) 165 176
Base Oil Viscosity, cSt (°C) 68 168



Biodegradable Rail Curve Grease

BIOCURVE™ provides superior lubricity that reduces friction and wear between the track and wheel flange and improves fuel efficiency. BIOCURVE is a premium quality biodegradable rail curve grease formulated from U.S.-grown vegetable oils and a lithium-based thickener.

This unique curve grease is ideal for use on heavy haul and high traffic rail lines where ambient temperatures extend from 0°F to 160°F. BIOCURVE is speciffically designed for environmentally sensitive areas, but is equally effective in most rail applications within its temperature range. 

BIOCURVE offers a better gauge face coefficient of friction and less migration to the top-of-rail than petroleum-based grease. It is conveniently dispensed from the L.B. Foster PROTECTOR® wayside track lubrication system and developed to resist port plugging in the wiping bars. BIOCURVE is manufactured to meet the highest quality speciffications for critical rail applications.


  • Designed for wayside applicators with wide temperature requirements
  • Pumps and carries when using wayside application equipment and grease temperature is between 0°F and 160°F.
  • Recommended for heavy load applications, such as coal trains
  • Recommended for environmentally sensitive areas near waterways


  •  Reduces friction and wear between track and wheel flange
  •  Formulated to resist port plugging in wiping bars
  •  Longer carry down track from lubricator
  •  Better gauge face coefficient of friction than major petroleum-based grease
  •  Less migration to top of rail than major petroleum-based grease
  •  Improves fuel efficiency and superior lubricity
  •  Higher flash point than petroleum greases for increased safety
  •  Biodegradable formula reduces damage to the environment
  • Meets EPA's Environmental Preferable Purchasing (EPP) criteria
  • Meets USDA's biobased product deffinition for EO 13101
  • Manufactured from renewable USA-grown crop-based oils
  • Conforms to State of Iowa Senate File - SF 2185 and SF 2249 - purchasing preference for biobased lubricants
TYPICAL PROPERTIES *0 to 100 35 to 160            
Appearance Dark green to black Dark green to black
Cone penetration, unworked 310 - 340 310
Four ball wear scar (mm) 0.58 0.55
Four ball weld load (kg) 500 500
Dropping point °C (°F) 191 (376) 199 (390)
Oil Separation   <5%
Base oil viscosity at 40°C (cSt) 86 86
Base oil viscosity at 1oo•c (cSt) 16 16
Base oil viscosity Index 201 201
Base Oil Flash Point °C (°F) 326 (619) 326 (619)
Base oil biodegradability Pass Pass
Base oil aquatic toxicity Non-toxic Non-toxic



  • Recommended for L.B. Foster PROTECTOR® Track Lubrication System and other brand lubricators


  • 400 lb drums
  • 35 lb pails
  • Totes and bulk