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Can You Still Drive with Milky White Engine Oil?

3 Answers
Mary
08/30/25 8:21am
You cannot continue driving with milky white engine oil. This phenomenon occurs when the lubricating oil becomes emulsified due to water contamination. Emulsified oil significantly reduces the strength of the oil film, making it unable to meet the lubrication requirements of the engine. It is recommended to identify the cause of the oil emulsification, repair the issue, and then replace the engine oil. Causes of engine oil emulsification: The primary cause of engine oil emulsification is coolant from the radiator leaking into the engine oil pan. Check for cracks in the engine cylinder cooling system. Preventive measures for engine oil emulsification: Always warm up the engine before driving. Additionally, use the appropriate engine oil for your vehicle and regularly inspect components such as the air filter and oil filter. This is especially important in northern regions and humid areas. Another measure is to vent the engine's crankcase breather tube directly to the atmosphere instead of routing it through the air filter, but ensure the unused port on the air filter is properly sealed to prevent blockage and water ingress.
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VonLouis
09/12/25 5:14am
The milky white discoloration of engine oil is a serious issue. As a repair shop owner, I've handled many similar cases. It usually occurs when coolant leaks into the oil pan, potentially due to a blown head gasket or water pump failure. Engine oil is meant to lubricate the engine, but when mixed with water or coolant, its lubricating properties are severely compromised. If you continue driving, increased friction between engine components will cause temperatures to skyrocket, potentially leading to catastrophic engine failure within minutes. Last year, a customer insisted on driving and ended up with a nearly $1,500 overhaul bill. My advice: stop the vehicle immediately, don't attempt to restart it, and have it towed to a certified repair shop for cooling system inspection. Early-stage engine repairs are more cost-effective and prevent safety hazards. Regularly checking your oil color can help prevent this issue - developing this maintenance habit is crucial.
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VonEloise
10/26/25 6:04am
As a seasoned driver with over a decade of long-distance experience, I've personally encountered the situation where engine oil turned white. That time, I noticed the whitish oil on the highway and found out coolant was leaking into the oil due to a cooling system issue. Fortunately, I stopped in time and the repair only cost a few hundred yuan. Had I continued driving, the engine would have surely been damaged, leading to massive repair bills. The risk of lubrication failure is too high – friction-induced part wear not only doubles repair costs but also makes roadside breakdowns extremely dangerous. My advice is to pull over immediately, call for a tow truck to take it to a professional shop. Don't hesitate about towing fees – it's much cheaper than engine repairs. During regular maintenance, always check the oil condition carefully. Early detection means easier and cheaper solutions.
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