When switching to low viscosity engine oils, there are a few things you should look out for:
High Shear Stability: A highly shear stable formulation will ensure minimal change to viscosity over time and better handle minor fuel dilution events. This results in better stay-in-grade capabilities and protection for your engine.
Low Temperature Performance: Look for industry-standard test results such as “Cold Crank Viscosity (CCS)” and “Low Temperature Pumpability (MRV)”; these will ensure that critical components get optimal lubrication, even in the coldest of operating conditions. With improved fluid properties at lower temperatures, these oils do a better and more efficient job of lubricating critical engine parts. They can also increase the life of starters and batteries to combat the additional strain that can occur as a result of anti-idling strategies.
Superior Engine Test Results: Your engine oil should demonstrate superior engine protection performance against industry recognized tests, e.g. Daimler OM 646 LA Engine Performance Test or Cummins ISB. Engine oil that surpasses these standards provides better engine protection and can even offer extended drain capability.
Field Proven Engine Protection: Field tests provide a better understanding of how new engine oil will perform in the real world. Engine oil demonstrating low iron wear levels when compared with a higher viscosity oil (i.e. SAE 15W-40), will offer superior engine protection properties.
Field Proven Fuel Economy: Many factors can affect fuel economy, including:
- Driver habits
- Driving terrain
- Weather conditions
- Severity of operating conditions
Fuel economy field tests provide a controlled environment in which real world fuel economy benefits can be assessed. Industry recognized tests, such as the SAE J1321 Type II Fuel Consumption Test, can support fuel economy claims and have strict and rigorous testing guidelines to ensure accuracy in the results.