Review on Negative Pressure Well Sealed Adapters Connectors by Vincent Bain

This tool was excellent. It worked exactly as advertised. The cone adapter is well sealed and is also used by the Mopar tool. Many modern engines don't have a drain block and you can only drain about 50% of the coolant at a time and you will have a hard time bleeding when refueling if you don't have this tool. I was surprised how quickly it dropped to -0.08 MPa. If you have to rinse 5 times with distilled water to clean the block, this tool is a must have. The Mopar version is over $100 and the OEM tools are $85. I can't say enough beautiful things. My only suggestion is a third valve to turn the air on and off in the store, but I fixed that with a $5 valve from Home Depot.