Can Engine Oils Be Mixed?
2 Answers
Engine oils should not be mixed. Different types of oils contain different chemical substances, and mixing them may lead to accidents, posing significant safety hazards. It is advisable to avoid mixing oils whenever possible. Here are some precautions regarding adding engine oil to your car: 1. Pay attention to the timing of oil changes for your car. Under normal driving conditions for a new car, if synthetic oil is used, the oil can generally be changed every 10,000 kilometers, and in some cases, it can even be extended to 20,000 kilometers. 2. Choose the right engine oil. It is recommended to opt for multi-grade oils as they are economical, long-lasting, and efficient, providing better protection for the engine. If the engine is in good condition and the seasonal temperature is low, it is advisable to use oil with lower viscosity to ensure smooth oil flow. 3. The oil level should be slightly below the mark on the dipstick and not overfilled. Never let the oil level fall below the minimum mark, but adding too much oil, exceeding the upper limit on the dipstick, will increase the crankshaft's rotational resistance, reduce the engine's output power, and cause excess oil to enter the combustion chamber, leading to oil burning, blue smoke emission, and increased fuel consumption.
Having driven for decades, I must warn everyone about mixing engine oils. In my younger days, being naive and trying to save money, I mixed semi-synthetic and mineral oils from different brands. Within days, the engine started making terrifying noises, and a mechanic found worn piston rings during inspection. The base oils and additives from different brands aren't compatible - mixing them can cause sedimentation, chemical reactions that neutralize their effectiveness, and uneven lubrication films. Now I've learned my lesson: when oil levels are low, I either top up with the same brand and viscosity or do a complete oil change. This is how you ensure long engine life. Honestly, regular oil changes are far more economical than mixing oils. A well-maintained engine gives peace of mind while driving, and the money saved on repairs could buy many barrels of fresh oil!
