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Is it normail for Toyota tundra oil pressure gauge to move up and down?

It is normal for the oil pressure gauge in a Toyota Tundra to fluctuate slightly while the engine is running. This fluctuation is caused by changes in the engine's oil pressure as it circulates through the engine. The oil pressure gauge should typically read between 30 and 80 psi (pounds per square inch) at idle, and between 40 and 100 psi at highway speeds. If the oil pressure gauge is reading below or above these ranges, it may be an indication of a problem with the engine's oil pump or oil pressure sensor.