LIFTING G 3C2634 - Caterpillar

the engine is at operating temperature and you are using SAE 10W30 oil, the maximum oil temperature is 115 °C (239 °F).Look for a restriction in the oil passages of the oil cooler. The oil temperature may be higher than the normal oil temperature when the engine is operating. In such a case, the oil cooler may have a restriction. The oil pressure of the engine will not get low just because the oil cooler has a restriction. Determine if the oil cooler bypass valve stays open. This condition will allow the oil through the valve instead of the oil cooler. The oil temperature will increase.