I am going about replacing my oil cooler lines. Don't have the new ones yet, but I can't really drive the car in the state it's in now, so I though of going about removing the old ones. I'm trying to remove the battery box and I have one bolt holding it on. I tried all my sockets and none of them work and I believe the edges of the bolt are all rounded off. It is kind of in an awkward position. I thought about torching it to maybe melt the plastic around it but I'm scared about using a flame in the engine bay. I don't want to rip the battery box out. What should I do?

 

They are two M6 bolts but yeah, they rust out quickly due to the battery. You can try griding the heads off with a die grinder or dremel and then remove the shank of the bolt with Vice Grips after you have slid off the box.

 

get you some needle nose pliers and do it the old fashion way