This is my first time using this forum. Don't know if this question should be in the technical forum. I have an old Allis Chalmers ACP 20 forklift. LP SERIAL ADD 89370. I can't find an operators manual anywhere. There is a dipstick for the engine oil and one for the hydraulic oil. I can't find one for the transmission. Does the hydraulic oil also flow through the transmission? What hyrraulic oil does this machine use. A tractor dealer told me it takes Mobilfluid 424 which I can't locate. Also, what engine oil does it take. Sorry for so many questions but any help will be appreciated.