PRODUCT FEATURES GP genuine pump oil. Specially blended pump crankcase lubricating oil, 30W viscosity, nondetergent. Approved and recommended for use in all General Pump/InterPump crankcases. Recommended for use in other pressure washer pump crankcases. Not for use in internal combustion engines. 16 oz Reviews FEATURED PRODUCTS GP Pump Packing & Seal Kit 170 $110.19 Add to Cart GP Pump Kit 169 $155.90 Add to Cart GP Pump Kit 01 $42.54 Add to Cart Beacon Pump Oil $10.40 Add to Cart