What type of oil should I use with the DWS535/DWS535T and do you have an MSDS for it?

You should never have to fill the oil on this model but if you should need to you can use the oil listed in the manual (Mobil SHC636), or 85W-140 from a local auto store. This gear lube is also good for the following tools: DW377 DW378 D28770. For a copy of the MSDS for this lube, please see the attachment