What is the normal oil pressure for a Lexus UX?
2 Answers
Lexus UX gasoline engine oil pressure varies depending on the age of the engine. For a new car, when the engine is at normal temperature and idling, the pressure should not be lower than 1.5 MPa; during normal driving, it should not be lower than 4 MPa. For an older car, the oil pressure is usually slightly lower than that of a new car. Below is relevant information about oil pressure: 1. If the oil pressure is too low, it will disrupt the engine's lubrication conditions, leading to poor lubrication, cooling, and cleaning, which can cause parts to stick and wear. Excessive clearance between the crankshaft main journal and connecting rod journal and bearings, low oil viscosity, and a ruptured filter element can all result in low oil pressure. 2. If the oil pressure is too high, it can also disrupt normal lubrication conditions. For example, excessive oil viscosity, deteriorated or gelled oil, clogged filter element and oil passages, and improperly adjusted or stuck pressure relief valves can all cause excessively high oil pressure.
I'm quite qualified to speak on this issue, having driven a Lexus UX for three years. Normal oil pressure at idle is around 1.5 to 2.5 bar, while driving at 2000 RPM it typically fluctuates between 3.5 to 4.5 bar. Pressure will be higher during cold starts, then stabilizes once the oil warms up. During my last maintenance, the mechanic measured with a mechanical gauge - my 2.0L hybrid model showed about 3.2 bar. If you see the dashboard pressure light flashing or readings drop below 1.2 bar, don't push it - shut off immediately and check, it's likely an oil pump or sensor issue. Remember to use 0W-20 full synthetic oil, as incorrect viscosity affects pressure too.
