Which type of vehicle needs to be added to the oil cooler

The original engine does not need to be cooled outside, and the modified engine can be used to judge whether it is needed or not according to its modification degree or some phenomena. Others, because most models do not show the oil temperature, can only be estimated by the water thermometer, because the two will affect each other. Assuming that all the engine settings are appropriate, the water cooling system has no failure, the water temperature meter shows high, then the oil cooling system should be considered. Of course, let's go ahead with the assumption that the water temperature is a reflection of the comprehensive state of the engine. Specifically, which causes the change of the water temperature , and it needs to be investigated one by one. If your reformer is experienced, it should be easy to handle.