The SEAFLO oil change system can effectively perform oil change for the engine, inboard motor, outboard motor, crankcase or places where oil replacement is inconvenient for some marine sports equipment such as RVs, yachts, boats, and ships. Equipped with a high temperature and oil resistant oil change pump, which can quickly and safely replace the waste engine oil with high performance. Equipped with a 3.7 gallon high temperature resistant oil drum, the operation is simple and convenient, so that the replaced oil can be centrally recycled or processed.