I followed a 125 Phoenix around and built a trap on it by locating its ashes with a Parasaur,I marked its location on a map and went to do stuff and on the next SuperHeat I went to that spot. . .it despawned...it's ashes despawn if your gone for too long and who knows when the next heat wave is gonna come,if its a high level make a trap and quickly make 20 to fking 100 jars of oil and return and camp its spot,wanna use a flamethrower but can't make one,purple crates and above give them like common loot