What to Do When Engine Oil Pressure is Too High?

[AaliyahMarie]

Solutions for excessive engine oil pressure: 1. If a long-used diesel engine shows excessive oil pressure, it indicates that the fine oil filter is clogged and should be cleaned. 2. If the diesel engine has excessive oil pressure at low temperatures, but the oil pressure returns to normal when the engine temperature rises, it means the excessive oil pressure is caused by the diesel engine being too cold. 3. If the oil pressure becomes significantly too high after changing the oil, it indicates that the wrong oil grade was selected. For example, using oil with a higher viscosity in winter can cause excessive oil pressure. Replacing it with oil suitable for the season is necessary. 4. If the oil viscosity is too high, it indicates greater internal friction resistance during oil flow. Oil viscosity is related to engine temperature—when the engine temperature is low, the oil viscosity is high. 5. When the engine temperature is high, the oil viscosity decreases. High oil viscosity results in poor fluidity but better sealing and less leakage. If the oil viscosity exceeds the specified value, the flow resistance in the lubrication system will increase, leading to higher pressure.

[ORafael]

When I notice the engine oil pressure is too high, I don't panic immediately—there must be something wrong. The most common causes are either too much oil or using oil that's too viscous, especially in cold winter temperatures. I usually park and check the dipstick myself; if the oil level exceeds the standard mark, I drain some out. If the oil viscosity isn't right, I switch to the manufacturer-recommended grade and avoid randomly choosing brands. Additionally, a clogged oil filter can also cause high pressure—last time, replacing the filter solved the problem. If that doesn't work, it might be a faulty pressure regulator or an issue with the oil pump, which requires a mechanic's attention. High pressure can seriously damage the engine, leading to oil leaks or burnt components. My advice is to address it quickly—safety first.

[StRosalie]

High oil pressure is quite annoying, and I always remind myself to check the basics. First, see if the oil level is too high—adding too much oil can cause the pressure to spike. Then, make sure the oil viscosity is appropriate; don't use thick oil in winter. I've also encountered cases where the filter was clogged, and cleaning or replacing it helped. If the pressure stays high, don't force the engine to run, or the seals could get damaged. I usually ask the mechanic to check the pressure relief valve and oil pump during servicing—those small parts require professional tools for accurate diagnosis. Regular maintenance with good-quality oil is key, so I choose reputable brands to prevent such issues.

[DeClara]

Excessive oil pressure requires immediate attention to prevent engine issues. My approach is to check if the oil level exceeds the marked line; if it's too high, drain some oil. Then, inspect if the filter is clogged, clean or replace it if necessary. Incorrect viscosity can also cause high pressure, so switch to the appropriate oil grade. If the pressure remains high, the pressure regulator valve might be faulty, and it's time to visit a repair shop. Don't overlook safety—avoid driving at high speeds under high pressure.