Viscosity: 20w50 and SAE 50 have different viscosities. 20w50 is a multi-grade oil, meaning it has a viscosity of 20W (winter) and 50 (summer). SAE 50, on the other hand, is a single-grade oil with a viscosity of 50. Mixing these two oils will result in an oil with a viscosity that may not be suitable for your engine.
Additives: Different motor oils may contain different types and amounts of additives. Mixing oils can result in an imbalance of additives, which may affect the performance and protection provided by the oil.
Compatibility: Mixing different types of motor oils may lead to compatibility issues. Some oil formulations may not be compatible with each other, and mixing them can cause chemical reactions or interactions that could harm your engine.
It is important to use the motor oil recommended by your vehicle's manufacturer. If you are unsure about which oil to use, consult your vehicle's owner's manual or a qualified mechanic.
