The wrong viscosity of oil in your engine.
Low oil pressure or fluctuating oil pressure.
The oil pressure gauge is going to fluctuate on a Toyota Tacoma or any automobile. The oil pressure is less when the auto is idling and more when the auto is going down the road.
symptoms of high engine oil pressure
No oil pressure, engine noise, engine failure.
Engine noise.
High discharge pressure and low liquid line pressure
Symptoms of a blocked breather pipe on a Daewoo Espero can include engine performance issues such as rough idling, decreased power, and increased oil consumption. You may also notice oil leaks or a rise in engine temperature due to pressure buildup. Additionally, excessive crankcase pressure can lead to oil mist or vapors escaping from seals and gaskets. If the blockage is severe, it could trigger warning lights on the dashboard.
under the bonnet
Try O'Reilly Auto.
Oil can rise to the surface naturally due to underground pressure. When oil is trapped underground in a reservoir under pressure, it can push itself up through cracks or porous rock formations and reach the surface without the need for artificial pumping. This natural occurrence is known as an oil seep.
As the engine speed increase so does the speed of the oil pump. the faster the pump turns the higher the pressure becomes. When changing gear the engine speed drops along with the oil pressure.
Low oil pressure Low cylinder pressure Anti freeze coming out of the tailpipe (sickly sweet smell) Water in oil Oil in water Frothing or bubbling in radiator