GARTZ SAE 20W50

  • GARTZ Heavy Duty Multigrade SAE 20W50 API CF-4/SN Engine Oil

    Meet and exceeds the American Petroleum Institute (API) CF-4/SN classification and has been field test- ed to be comparable to American, European and Asian manufacturers' standards including: API CF-4, ACEA E7, Cummins CES 20078, Volvo VDS-3, Renault RLD-2, MB 228.3, MAN M357 and other OEM specifications where a multigrade API Cl-4 diesel engine oil is recommended. 

Gartz 20W50 – Engine Oil for High Mileage and Heavy-Duty Conditions

Gartz 20W50 is a high-viscosity multigrade engine oil designed for older engines and heavy-duty applications.

It provides strong oil film protection at high temperatures and helps maintain engine performance under load.

The SAE rating indicates:

  • “20W” for cold temperature flow
  • “50” for high-temperature viscosity, meaning thicker protection at operating temperatures

Signs of degraded 20W50 oil

Over time, oil loses its effectiveness.

Common symptoms include:

  • increased engine noise
  • reduced performance
  • higher fuel consumption
  • dark and thick oil

Recommended oil change interval:

  • 4,000 – 6,000 km

Why engines require 20W50

In real-world conditions:

  • older engines have larger clearances
  • heavy loads increase stress
  • high temperatures accelerate wear

20W50 oil helps:

  • maintain oil pressure
  • reduce oil consumption
  • protect worn engine components

Using thinner oil may lead to:

  • oil burning
  • engine noise
  • faster wear

Applications of Gartz 20W50

Suitable for:

  • older vehicles
  • light trucks
  • heavy-duty usage
  • hot climate conditions

It is widely used in gasoline and diesel engines operating under demanding conditions


Key performance characteristics

20W50 oil provides:

  • strong high-temperature stability
  • thicker protective oil film
  • reduced oil evaporation

It also helps:

  • protect engine components
  • reduce wear
  • maintain engine durability

Proper usage recommendations

To maintain engine performance:

  • change oil every 4,000 – 6,000 km
  • choose viscosity based on engine condition
  • avoid low-viscosity oil for worn engines

Gartz 20W50 helps:

  • reduce oil consumption
  • lower engine noise
  • improve durability
  • maintain performance under heavy load

Gartz expert insight

In real garage conditions:

  • worn engines consume more oil with low-viscosity lubricants
  • switching to 20W50 improves stability

In hot climates and heavy traffic, oil degrades faster.

Using higher viscosity oil helps extend engine life and improve performance.


Conclusion

Gartz 20W50 is a reliable choice for high mileage and heavy-duty vehicles.

Using the correct oil helps:

  • protect the engine
  • reduce wear
  • lower maintenance costs

 

Recommendations / Specifications:

  • API CF-4

  • ACEA E7, Cummins CES 20078, Volvo VDS-3, Renault RLD-2, MB 228.3, MAN M357

Product Typicals:

SAE Grade

20W50

API Grade

CF-4

Density @ 15 °C, kg/l

0.893

Pour Point, °C

-12

Flash Point, °C

>205

Kinematic Viscosity, cSt

 

@ 40 °C

161

@ 100 °C

17.5

Viscosity Index

135

TBN, mg KOH/g

>8.0

Why choose Gartz

GARTZ lubricants are designed to provide the best lubrication to critical parts of the gearbox, which reduces friction and prevents wear, extending the life of the gearbox.

Satisfaction guaranteed
Satisfaction guaranteed
Maximize vehicle performance
Maximize vehicle performance
High quality lubricating oil
High quality lubricating oil
Extends engine life
Extends engine life