PHEV and HEV Oil Requirements
- Operating Conditions: Both PHEVs and HEVs have lower engine operating ratios and lower engine oil temperatures compared to traditional vehicles. PHEVs, in particular, tend to have an even lower engine operating ratio due to their ability to run solely on electric power for extended periods.
- Special Requirements: The reduced engine usage in both PHEVs and HEVs leads to specific issues such as water and unburnt fuel accumulation in the engine oil, which can cause lubricant emulsions, rust, corrosion, and increased wear. These conditions necessitate oils with improved anti-rust and anti-corrosion properties.
- Oil Formulations: There isn’t a standard specific to each type, but both benefit from hybrid-specific engine oils that address the problems caused by lower operating temperatures and reduced engine use. Infineum’s research suggests that these vehicles benefit from specially formulated oils that can handle the distinct conditions they create.
- Key Performance Indicators: Key areas of focus for both PHEV and HEV engine oils include low-temperature viscosity and enhanced corrosion inhibition. These properties are crucial for maintaining engine integrity, especially during cold starts.
In summary, while PHEVs and HEVs share similar challenges regarding engine oil, there isn’t currently a distinct oil type specifically labeled for PHEVs versus HEVs. However, both types benefit from hybrid-specific formulations designed to address their unique operational challenges.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/do-phevs-require-different-types-of-oil-compared-to-hevs/
