The false tank will need to be removed to comfortably
get at the rad cap
Flushing compounds can be highly toxic, follow manufacturers instructions.
Remove radiator cap
Remove drain plug and drain the coolant
Replace the drain plug
Remove coolant reserve tank, empty, rinse and replace attaching the syphon
tube
Fill the rad with flushing compound for aluminum engines, install cap and run
for 10 minutes.
Drain the rad using the previous instructions
Fill the rad with plain water and run the engine, do this twice or more to
ensure all the flushing compound is removed
Fill the system with 50-50 ethylene glycol and distilled water.
Start the engine with the rad cap OFF and run until there are no bubbles
present and the level has stabilized.
Stop the engine and add coolant if needed.
Install rad cap.
Check the reserve tank and add coolant to the correct level.
Check for leaks.

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The only stupid questions are the one's that are not asked.