Role of following lubricant additives (one mark each) 1. Zinc ditinophosphate: - Zinc ditinophosphate serves as an anti – oxidant and anticorrosive additive.
2. Fatty acids: - This type of additives prevents rusting of ferrous engine parts during and form acidic moisture accumulation during cold engine operation.
3. Organic Acids: - This type of additives improves the detergent action of lubricating oil.
4. Ester: - To lower the pour point of lubricating oil.
5. Silicon polymers: - This additive serves as Antifoam Agent.