Diesel Fluids

Diesel Engines Fluids

Protect your investment.

For your Kohler engine maintenance, choose only Rehlko diesel engines fluids. Rehlko oil, coolant and fuel additives have been specifically engineered and tested for Kohler diesel engines to provide exceptional protection, peak performance and extended equipment life.

Rehlko’s aftermarket fluids offer superior wear protection, ensure engine cleanliness, and enhance fuel efficiency beyond what standard lubricants can achieve.

Extreme Conditions 5W40 Oil

Description: Provides exceptional wear protection and protects the service life of Diesel aftertreatment systems.

Size: 1 GALLON 5 GALLON 55 GAL DRUM

Why buy:

  • Protects against soot agglomeration, reducing abrasive wear and deposit formation

  • Maintains proper viscosity over a broad temperature range

  • Exceptional oxidation control

  • Helps reduce oil consumption.

Extended Life Coolant

Description: Provides superior heat transfer and excellent protection against corrosion,
cylinder-liner cavitation, freezing and boil-over

Size: 1 GALLON - 55GALLON

Why buy:

  • Pre-mixed 50/50 with high-purity water

  • Based on Organic Additive Technology (OAT)

  • Fully formulated: does not require the use of supplemental
    antifreeze/coolant additives (SCAs) or extenders

  • Free from BNAPS (Borate, Nitrite, Amine, Phosphate, Silicate) and 2-EHA (2-Ethylhexyl acrylate)

Extra Performance Fuel Additive

Description: Formulated to clean dirty injectors and provide lubrication to your pump and injectors to reduce wear, increasing fuel quality. Rehlko Extra Performance diesel fuel additives are the right choice to keep your equipment running smoothly, reliably, and efficiently in the toughest operating conditions.

Size: 8 oz (case of 6)

Why buy:

  • Keeps the injectors clean and lubricated

  • Optimizes the engine performance

  • Improves clean combustion and emissions

  • Protects the fuel system from corrosion

  • Alcohol free

Extra Performance Fuel Additive Arctic Formula

Description: Rehlko Extra Performance Arctic Formula diesel fuel additive offers protection to your engine’s fuel system while granting performance efficiency at low temperatures. Featuring improved cold-startability of the engine and prevented fuel gelling, this additive makes the perfect choice for all-season engine protection, the real life-saver of your fuel system at all operating conditions.

Size: 16 oz (case of 12)

Why buy:

  • Formulated to protect fuel system and injectors

  • Prevents fuel gelling at low temperatures

  • Maintain your engine startability and performance in winter conditions

  • Improves engine combustion efficiency

  • Alcohol free.


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