Overheating. Whats Up?!?!?

[3onTree]

Check the overflow filler cap.

There is this gargling sound that comes from the overflow bottle i simply cant stop it I've done a complete flush changed coolant had the front end elevated making sure there was no air in the system but after a long drive or if i give it a little bit of a hard time when i turn the engine off it starts. It gargles for a good 15. 20 mins. Whats going on can anyone help???

Check the cheap stuff first. A faulty filler cap can cause cooling problems. It happened to me with the car close to brand new. It used to overheat then suddenly plunge to normal in traffic. A new filler cap sorted it. The gurgling you are hearing could be the air leaking into the system (which is pressurised).