If your car's oil light comes on randomly at high speeds but then turns off after a minute or so, the most likely problem could be related to oil pressure. Here are a few possible explanations:
Low oil level: Insufficient oil in the engine can lead to low oil pressure. When the car is at high speeds, the oil pump needs to circulate oil more rapidly, and if the oil level is too low, it may struggle to maintain adequate pressure. Checking the oil level and adding oil if necessary can help resolve this issue.
Oil viscosity: The oil's viscosity refers to its thickness or resistance to flow. If you are using an oil with a viscosity that is too thin for your car's specifications, it may not provide sufficient oil pressure under high-speed conditions. Consulting your car's manual or an automotive professional to ensure you are using the correct oil viscosity can help address this problem.
Faulty oil pressure sensor: The oil pressure sensor is responsible for detecting the oil pressure and sending a signal to the oil light on your dashboard. If the sensor is malfunctioning, it may intermittently send incorrect signals, causing the oil light to come on when there is no actual issue with oil pressure. Replacing the faulty sensor can resolve this problem.
Oil pump malfunction: The oil pump is responsible for circulating oil throughout the engine to maintain proper lubrication and pressure. If the oil pump is not functioning correctly, it may intermittently fail to provide adequate oil pressure at high speeds. A malfunctioning oil pump may need to be repaired or replaced by a qualified mechanic.
It is important not to ignore the oil light, as low oil pressure or insufficient lubrication can cause serious engine damage if left unaddressed. It is recommended to have your car inspected by a qualified mechanic who can diagnose the exact cause of the issue and perform any necessary repairs.