I Bought a PCL 3/8 impact gun. and some PCL Air Tool Oil. I don't have an oil dispenser, just an air and water filter. I believe one can oil this tool by putting a few drops of oil up the intake, is that correct? and if so how many drops of oil should one drop into the intake ? And how often? Any advice appreciated. note it won’t be used much , just to undo a lawnmower blade central bolt. And maybe if its not too vicious the odd car wheel bolt. I assume this is the right type of oil?