Here's why mixing different types of oil is not ideal:
1. Compatibility Issues: Conventional oil and synthetic oil have different chemical compositions and additives. Mixing them may alter the oil's properties, affecting its performance and ability to provide adequate lubrication.
2. Viscosity Differences: Synthetic oils are formulated to maintain their viscosity over a wider temperature range compared to conventional oils. Mixing the two may alter the overall viscosity of the oil, which could affect the engine's performance, especially in extreme temperatures.
3. Additive Interaction: Conventional oils and synthetic oils may contain different additive packages designed for specific purposes. Mixing them may lead to unintended chemical reactions or interactions between the additives, potentially reducing their effectiveness or causing adverse effects.
4. Reduced Performance: Mixing different types of oil may compromise the oil's ability to provide optimal lubrication, cooling, and protection to engine components. This could result in increased wear, reduced fuel efficiency, and potential engine damage in the long run.
5. Warranty Concerns: Some vehicle manufacturers recommend specific oil types for their engines, and mixing different types may void the warranty. It is always recommended to refer to the vehicle's owner's manual for specific oil recommendations and requirements.
If you accidentally add a small amount of synthetic oil to an engine with conventional oil, it may not cause immediate problems. However, it's generally advisable to avoid this practice consistently. If you want to transition from conventional oil to synthetic oil, it is recommended to drain the old oil completely before adding the synthetic oil. This ensures that the engine's oil system is filled with the recommended oil type and its characteristics are maintained optimally.
