PUMP OIL, HOTSY 10W 40, QT. Pacific Bay Equipment Sale! from $13.50 Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. HOTSY PUMP OIL Formulated to exceed the factory specifications for HOTSY and other high pressure pumps. Non-detergent, non-foaming 32 oz. bottle