Does it matter if there is a little more engine oil?
2 Answers
Exceeding the upper limit of the engine oil dipstick by a small amount can have adverse effects, leading to engine oil burning, primarily manifested as blue smoke from the exhaust pipe. The details are as follows: 1. Symptoms of oil burning: If the engine shakes at idle, or if the engine oil is significantly depleted within a routine maintenance (oil change) cycle (without any leakage), then the vehicle is experiencing oil burning. 2. Causes of oil burning: (1) Incorrect installation or misalignment of piston rings, though this is rare and has a low probability of occurrence. (2) Overfilling of engine oil, exceeding the upper limit mark. (3) Dirty throttle body.
Having too much engine oil does make a difference. I experienced this right after an oil change - the engine sounded off when I hit the road, and the car felt sluggish. Upon checking, I found the oil was slightly overfilled. Excess oil causes the crankshaft to churn it, creating air bubbles that compromise lubrication. Long-term, this accelerates engine wear and may even lead to oil leaks. I remember the mechanic using the dipstick to measure, showing the level above the Max mark. He said it's a common mistake. After draining some oil, everything returned to normal. My advice: always check with the dipstick post-oil change to ensure levels stay between Min and Max, preventing impacts on driving safety and fuel efficiency. Paying attention to this during regular maintenance extends your car's lifespan and saves on repair costs - never overlook it.
