A PSI over 80 is usually considered too high for the engine to properly be protected from damage. High oil pressure is an indicator that the oil is not able to properly pass through the bores and reach all parts of the engine effectively.
80 psi is a perfectly acceptable cold oil pressure. It also happens to be the relief spring pressure in the oil pump. Just means you have a well functioning oil pump and a tight engine. OR a failing sending unit.
Pressure above 80 pounds per square inch (psi) is considered high water pressure. Plumbing fixtures are designed, produced, and tested to perform best with water pressure under 80 psi. Optimal water pressure is 50-80 psi.
Since pressure depends on resistance, it will vary with the engine's size, the passages' diameter, and the oil's viscosity or thickness. Most vehicles operate best between 25 and 65 PSI; anything over 80 is typically considered too high.
It won't damage it directly but it probably will damage it. As the oil pressure is much higher than normal it will flow past the oil rings and the oil will burn in the combustion Chambers at a much higher rate than normal and this can have negative effects on the exhaust valve.
If your oil pressure is consistently around 70 PSI at 2000 RPM, it is slightly higher than the typical range. This isn't necessarily a problem, but it could indicate a potential issue such as a faulty oil pressure gauge, an oil pump that's creating too much pressure, or an oil viscosity that's too high.
One of the most common causes of high oil pressure is using a defective sending unit. Most of the time, car owners presume that their cars stop working properly if the gauge reading changes very often.
Optimum oil pressure would be from 40 to 60 psi with a hot engine.
A psi between 20-30 is considered very low, and under the minimum water pressure required by most building codes. On the other side of the spectrum, water pressure above 80 psi is considered too high. Both extremely low and extremely high water pressure pose their fair share of risks and problems.
IPC: 608.2 Excessive Water Pressure. Where static water pressure in the water supply piping is exceeding 80 psi (552 kPa), an approved-type pressure regulator preceded by an adequate strainer shall be installed and the static pressure reduced to 80 psi (552 kPa) or less.
While you should always stay within this range, you should also never be below 20 PSI, or over 50 PSI, or you risk serious tire damage (more so than with standard overinflated or underinflated tires to a lesser degree). Your car may have different ideal tire pressures for the front and rear axles.
Some of the common symptoms that alert you that the oil pressure is too high include: a loud knocking or ticking noise coming from the engine, a noticeable decrease in engine performance, an increase in engine temperature, and a strong smell of burning oil.
Your car's oil pressure gauge goes up when you accelerate, because your crankshaft will spin faster, the oil pump shaft's gear is meshed with the crankshaft's gear in your car engine, both of them have to turn at the same time.
If your pressure is lower than 20 PSI or falls below the normal range of the gauge, it needs immediate attention, and it usuallz a consequence of another problem. However, it is difficult to determine the cause of low oil pressure.
The average cost of an oil pump replacement can range from $400 to $800, but this can vary depending on several factors, such as the make and model of the vehicle, the type of oil pump, the labor costs, and the location and availability of replacement parts.
A PSI over 80 is usually considered too high for the engine to properly be protected from damage. High oil pressure is an indicator that the oil is not able to properly pass through the bores and reach all parts of the engine effectively.
The placard or manual should list the appropriate psi for both the front and rear tires, as they may be different. Most passenger cars' psi requirement will be between 30 to 35 psi, but several vehicles fall outside of that range and every vehicle will have specific requirements.
Some engines can get down to less that 20 psi when hot at idle. And pressure in itself isn't always as big of a concern as the adequate volume of oil would be, that is enough oil reaching all the necessary areas inside the engine to lubricate and cool it.
If your oil pressure low and stop engine indicators pop on but your dipstick indicates that your oil levels are fine, the problem is likely electrical if you don't have any other automotive issues. If you do notice other issues, you may have the wrong oil, a bad pump, or a blocked filter.
The reading should be from 25 – 65 PSI while the engine is running. The only time the oil pressure should be zero is when the engine is idle. When the oil pressure gauge is stuck on high, like an 80+ PSI, then this could mean there is something wrong with the instrument.
Colder temperatures can actually increase oil pressure, but the churning oil in the engine may create air bubbles. Thicker oil may hold onto those air bubbles longer, making the oil pressure gauge read a lower value. Learn the signs of low oil pressure, and keep a close eye out for them this winter.