What type of oil does my unit take? Your Saw Joe SWJ800E uses regular Bar and Chain Oil, available for purchase on our website under model number SWJ-OIL. Related articles How loud is my Saw Joe SWJ701E? How do I assemble my SWJ800E? What is the size of the end nut holding the bar cover on my SWJ803E? Is the water flowing through an Aqua Joe® FiberJacket Max safe to drink? Can my existing 24V battery be used with the 24V-1500FL-LTE-P1 unit?