What are the effects of excessive engine oil on the engine?

[ValeriaDella]

The effects of excessive engine oil on the engine are: 1. Increased fuel consumption; 2. Reduced power output; 3. Accelerated carbon buildup; 4. Damage to certain engine components; 5. Potential leakage from crankshaft oil seals; 6. Shortened engine oil shelf life. The functions of engine oil include: lubrication, auxiliary cooling, cleaning, sealing to prevent leaks, rust and corrosion prevention, shock absorption, and anti-wear protection. Engine maintenance methods include: 1. Using qualified engine oil; 2. Using qualified coolant and antifreeze; 3. Regularly cleaning radiator scale; 4. Periodically removing engine carbon deposits; 5. Timely replacement of the three automotive filters (air, oil, and fuel); 6. Maintaining appropriate engine RPM.

[StEvangeline]

Last time I got my car serviced, I specifically asked the master technician about overfilling engine oil. It really damages the car. The crankshaft gets submerged in oil and can't rotate properly, like trying to run through thick mud - it takes extra effort and fuel consumption immediately increases. What's worse, the oil gets churned into foam, which then circulates through all parts of the engine. Places that need lubrication don't get properly lubricated, causing rapid wear on crankshaft bearings. My neighbor's car had to undergo major engine repairs prematurely because of this. Also, when oil foam enters the combustion chamber, it burns into black deposits. Over time, this can even clog the catalytic converter. My suggestion is to regularly check the oil dipstick and maintain the oil level between the upper and lower marks for optimal safety.

[FinleyMarie]

As a veteran driver with 20 years of transportation experience, I've seen too many cases of engines ruined by excessive oil. When you notice the accelerator becoming heavier and blue smoke coming from the exhaust pipe, it's most likely due to overfilled oil. An overfilled oil pan causes the crankshaft to whip the oil into foam like an eggbeater, and the oil pump ends up sucking up mostly bubbles. Without proper lubrication, the hydraulic lifters start ticking loudly. Just last week, my apprentice's car fell victim to this—the repair shop drained out half a bucket of carbon sludge during the oil change. The key is to act quickly. If the overfill is within 3mm, you can use a shampoo pump with a hose to extract the excess oil yourself. For anything beyond that, professional equipment is necessary for a complete oil change.

[LaVincent]

When you pop the hood during car maintenance, it's clear that excess engine oil creates hydraulic resistance. It's like waving your arms underwater—the crankshaft has to work harder against the oil's drag with every rotation. The consequences? Not only does fuel consumption spike by 10%, but oil seals also risk leakage under pressure. Worse, splashing oil can force its way past piston rings into combustion chambers, generating massive carbon buildup. The most extreme case I've seen? Spark plugs literally glued shut. For accurate checks, always measure oil levels when cold, or wait 5 minutes after shutting off a warm engine. Ditch the myth that 'more oil equals better protection.'