How Much Engine Oil is Normal to Add?
2 Answers
Maintain the oil level between the minimum and maximum marks on the dipstick. Disadvantages of overfilling oil: 1. Increased fuel consumption: When the engine cylinder block is overfilled with oil, it creates unnecessary resistance to the crankshaft's rotation, affecting power output and increasing fuel consumption. 2. Reduced power: Excessive oil entering the combustion chamber leads to more carbon deposits, increasing piston movement resistance and reducing engine power. 3. Environmental non-compliance: Worsens exhaust emissions, severely affecting the lifespan of the catalytic converter, and may even directly damage it. 4. Oil leakage: Reduces the lifespan of oil seals and may cause engine oil leaks.
Having driven for over a decade, I know engine oil level is no trivial matter. It varies greatly by model—compact cars usually take 4 to 5 liters, while SUVs or high-displacement engines may require 6 liters or more. The key is consulting the owner's manual for exact specs or checking the dipstick: pull it out, wipe clean, reinsert, and ensure the oil mark sits between min and max indicators. Underfilling risks engine overheating, accelerated wear, poor fuel efficiency, and failures; overfilling causes foaming, reduced lubrication, and seal damage. I always have professional shops precisely refill during scheduled oil changes, using synthetic oil to prolong engine life. Making it a habit to inspect oil condition monthly helps avoid costly overhauls.
