SOS Dinobots is one of the best episodes in Transformers and one of the best cartoon episodes ever as well. It introduces the best group of Transformers ever, the Dinobots.
After finding some dinosaur bones, the idea of building dinosaur transformers enters the mind of the autobots. So Wheeljack builds three "Dinobots" named Grimlock, Slag, and Sludge. However they go nuts and attack the autobots and Teletran 1 badly damaging Teletran 1. Decided to be too dangerous they are buried in a cave. Meanwhile Megatron and the Decepticons take over Sherman Dam and use the energy to defeat all of the autobots other than Wheeljack, Bumblebee, and Ratchet. Short on options it is realized the Dinobots are the last hope at saving the autobots.
This is a great episode. I always loved dinosaurs so the Dinobots were always a favorite of mine. It is a great plot that shows that even though the dinobots caused damage that they must be used to save the day. The final battle between the Dinobots and the Decepticons is epic and really shows how powerful the Dinobots can be.
Great episode, highly recommended.