PUMA Gas AIR COMPRESSOR, Serial: 61799, Model: Tuk13030hge, Two Stage Gas Driven Compressor, Honda Engine Power 13hp, Free Air Flow 22.8 Cfm 175 (psi), Tank Capacity 30 Gallons, Npt Outlet (f) 1-2, Speed 1000 Rpm, Length: 48, Width: 20, Height: 40, Cold Weather Instructions: 1) Change Oil Over After The 20hr Break Period To Straight 30 Weight Synthetic Oil In The Pump. 2) Change Oil Over After The 20hr Break Period To 10w-30 Synthetic In The Motor. 3) Make Sure When Starting The Compressor You're Flipping The Pilot Valve Up To Activate The Unloaders In The Pump