BestLine Racing engine oil and fuel treatments


Diamond Nano-technology based ultra-low friction technology

The Anti-Scuffing Ultra Low Friction Performance of Diamond Nano-Particles as an Oil Additive  (Independent study as reported in WEAR Tribology Magazine) 


Generally, the tribological regimes for sliding lubricated surfaces are broadly categorized into (i) solid/boundary lubrication, (ii) mixed lubrication, and (iii) fluid film lubrication (hydrodynamic or elastohydrodynamic lubrication). In many cases, most of the applied load is supported by hydrodynamic or elastohydrodynamic lubrication (EHL). However, an additional lubrication mechanism is required to reduce friction and wear and heat in contacts between large asperities from opposing surfaces. Even if the fraction of the load supported by non-hydrodynamic means is small, severe wear and perhaps seizure can occur if this additional component of lubrication is not available. 


DNL Engine Treatment can be used with all oils, oil types, and viscosities. Our product is formulated for use in both gas and diesel engines. Whether you drive a small car, a semi or a truck this product is safe to use in various size engines.  Also suitable for both race cars and daily drivers.

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Benefits and Uses:  See our retail site at

  • Use for any type of vehicle from go carts to commercial trucks and everything in between. 
  • More Concentrated Extreme Pressure Formula 
  • Use One Bottle for Every 5 quarts of oil
  • Extreme Heat Resistance and Boundary Layer Protection
  • High Shock Load Protection
  • Lubricates with Diamond Nano-Particles
  • Cleans & Treats Internal Components
  • Reduces Friction, Heat and Wear
  • Improves Fuel Economy and Performance
  • Protects Against System Corrosion 
  • Fortifies Against Oxidation and Thermal Breakdown
  • Extreme Pressure Lubricant
  • No Melting Point due to the Diamond Nano-Lubricating Particles
  • Suitable for Race and Daily Drivers
  • Race Proven Under Extreme Conditions

Directions for use:  Be sure to use during each oil change for optimal results

  • 5 quart oil capacity = One bottle - 12 ounces of DNL Engine Treat (cars)
  • 9 gallon oil capacity= 1 Gallon of DNL Engine Treat (Semi/Large Trucks)
  • 1 quart oil capacity = 3 ounces of DNL Engine Treat (motorcycles/small oil capacity)

Packaging Options:

  • 12 ounce bottle
  • 1 gallon containers
  • 5 gallon containers
  • 55 gallon barrels
  • 225 gallon totes