21. Some engines have an oil cooler , a separate small radiator to cool the engine oil. 22. The unit was cooled with a small auxiliary oil cooler located beneath the engine radiator. 23. These employees work around toxic chemicals and metals in the oil cooler department, Rosenstock said. 24. The unit makes fluid systems such as fuel and brake lines and transmission oil coolers . 25. A new oil cooler has been fitted, with 85 % more cooling area than before. 26. This was too short since a running engine was moving separate from the oil cooler . 27. An oil cooler has been added for improved cooling. 28. The oil cooler and radiator are also very similar. 29. The transmission is supplied with its own oil cooler . 30. Slightly larger carbs were added and the oil cooler was now located by the oil filter.