Can Motor Oil Be Mixed?

[OWillow]

Motor oil should not be mixed, as combining different types can cause chemical reactions, reduce lubrication effectiveness, and produce acidic or alkaline compounds that accelerate corrosion of engine components. Hazards of mixing motor oil: 1. Abnormal exhaust smoke; 2. Increased sludge buildup; 3. Reduced sealing performance of piston rods or piston rings, leading to discoloration or damage; 4. Increased likelihood of engine malfunctions; 5. Severe wear between pistons and cylinder walls. Functions of motor oil: 1. Lubrication and friction reduction; 2. Assisting in cooling; 3. Sealing and leak prevention; 4. Rust and corrosion protection; 5. Shock absorption.