i was replacing a gasket when i noticed my tranny was cracked from the rear i dont know if this is really bad or just something normal. i have no clue about transmissions and any help would be apreciated. i had a tranny leak recently and had to add fluid anytime i got to my destiantion (the reason i replaced the gasket). so ive been driving with low tranny fluid for a little while. did i burn up my transmission? up close they look like spider cracks. im not sure if its salvagable or should i just not drive my car anymore?

 

those are not cracks. those are from the casting process.

 

thanks man i was pretty concerned and wasn't sure what happened