For optimum results:- If you have tried inferior products flush your cooling system with water after disconnecting bottom radiator hose. Do not use a flushing agent.
Additional Gasket Fix Directions if you are experiencing back pressure or bubbling:
These directions are for people that have a lot of back pressure building in the cooling system, usually shown as bubbling in the header tank or air forcing past the coolant cap.

– Locate the cylinder causing the bubbling in the overflow tank or backpressure. (Remove plugs one at a time till bubbling stops.

– Before starting the engine, remove the spark plug or injector from the cylinder that was causing the bubbling in the overflow tank or back pressure. If accessible, remove injector wire from that cylinder. This will limit the amount of unburned fuel going into the combustion chamber.

– If you cannot find the spark plug that is missing, run the engine with the coolant level down to the top of the radiator core and with the radiator cap off or leave the expansion cap off the expansion bottle with water only just visible.

– Make sure to run the engine up to temperature with the spark plug Injector out and for the one final time with the spark plug injector back in place.

Gasket Fix Frequently asked Questions