Petroleum Dragon

Breeding
In the game it impossible to directly breed the dark and water elements. Therefore you must breed two dragons that each contain one of the two elements at the Breeding Mountain or Ultra Breeding Tree in order to get a Petroleum dragon.

Try these Combinations

Zombie+Mud=Petroleum,Metal,Pirate,Armadillo

Neon+Lantern=Petroleum,Gummy

Neon+Nenufar=Petroleum,Pirate,Rattlesnake,Rattlesnake

There is no guarantee that you will get the Petroleum Dragon.

Petroleum Dragon Attacks
1.Hard change (Fighting) 2.Flood (water) 3.Storm (water) 4.Leech (dark)

Petroleum Dragon Weaknesses
1.Fire 2.

2. Dark

Petroleum Dragon Resistances
1. Earth