recommended coolant

[JJtheHITMAN]

Iv always removed the return pipe off the expansion tank and when warm let it drain into a bucket with engine running whilst keeping the tank topped up with your appropriate mixture being careful not to let it run dry thus avoiding adding air to the system while flushing and replacing with fresh. i just use red, not really too fussed what type, can always test the strength with a antifreeze tester if not sure if its strong enough-or to stong