Billions of rand are expected to be invested in rail infrastructure in South Africa over the next three years.

As the infrastructure develops, we must look at ways of ensuring the reliability, efficiency and longevity of the rail assets. This is according to Hentie Spangenberg, technical manager for Shell South Africa.

Choosing the correct lubricant plays a significant role in the development, efficiency and longevity of rail infrastructure. It can also extend equipment life expectancy and save money.

Working with a rolling stock manufacturer, the company supplied a Hydraulic fluid that was chemically compatible with seals and components in the shock absorbers nitrile compensating pocket. This extended equipment life to five years instead of the expected two and a half years.

“South Africa rail operators should be looking for high-performance engine oils that are zinc and chlorine free,” says Spangenberg.

These oils have to meet the latest EPA (Environmental Protection Agency) requirements while reducing sludge build-up.

Viscosity for local engine oils is tested between 40° C and 100°C. “A lubricant whose viscosity increases in severe applications, while providing better lubrication and oil flow at low temperatures and during engine warm-up, is beneficial in local circumstances. A shear-stable viscosity index provides reduced oil consumption and better fuel economy.

“Keeping our trains on track means we must be looking at all avenues to ensure the efficiency and longevity of infrastructure and fleet,” Spangenberg concludes.