What is the solution for BMW 525 oil temperature reaching 120?
3 Answers
BMW 525 oil temperature exceeding 120 solution is introduced as follows: Reduce RPM: Lowering oil temperature not only reduces heat generated by the engine but also indirectly decreases the heat absorbed by the coolant, thereby slowing down the rate of coolant temperature increase. Causes of excessive oil temperature: Clogged oil filter causes oil to enter the main oil passage directly through the bypass valve, leading to oil contamination; poor piston ring sealing and cylinder leakage can also cause excessive oil temperature. If oil temperature is too high, it may cause vehicle issues, so it's advisable to pull over at a rest area for cooling as soon as possible.
Hey, I've been driving a BMW 5 Series for many years, and the oil temperature reaching 120 degrees is quite common, so it needs to be addressed immediately. I suggest first finding a safe place to park and turn off the engine, letting the car cool down for 10 minutes. At this point, check the engine oil—pull out the dipstick to see the oil level. If it's below the minimum line, top it up with some good-quality oil, preferably BMW's original oil. The cooling system can't be ignored either. Open the hood and check the coolant reservoir to ensure the fluid level is between the high and low marks. If it's low, add distilled water or specialized coolant. Is the fan working? Start the car to see if the fan is running normally; if not, it might be an electrical issue. High temperatures are often due to an aging water pump or a clogged radiator, so it's best to go to a professional repair shop for a comprehensive check as soon as possible. I once neglected this issue and almost ruined the engine, costing me thousands to fix. BMW's diagnostic system is precise and can quickly locate the problem after scanning.
I usually handle this matter simply. An oil temperature of 120 degrees sounds scary, but don't panic yet. After turning off the engine and letting it cool, check the oil level using the dipstick. It should normally be in the middle—if it's low, add new oil, but don't cheap out and use low-quality oil. Also, check the coolant level—be careful not to burn yourself when opening the cap. If it's low, top it up. Is the fan working? Start the car and listen for the fan. If it's not running, there might be an issue with the sensor or control module. Common causes include a weak water pump or a dirty radiator preventing proper heat dissipation—cleaning it might solve the problem. I've encountered many cases like this when I worked as a mechanic. Most owners handle the simple checks themselves and leave the complex issues to the dealership. Safe driving is key—forcing a high-speed drive will only make things worse.
