i have a 94 12 valve that i just got a few days ago its not my first cummins so i wasnt suprised that it had the typical 12 valve oil leak, until this morning i noticed that there was a huge puddle underneath the passenger side & the back of the block and around the last 2 valve covers even the bell housing has a little on it any ideas or help? thanks

 

check valve cover gaskets to see if they got cut if not then check rear main seal.