Re: Sump plugs

Posted by Tim Cole On 2011/9/26 16:17:40

Dear kts:

The torque spec for a 56 V-8 drain plug is 25-30 ftlbs and for my modern car 22-29 ftlbs. Multiply by 1.3333 to get Newton Meters. It doesn't take much to exceed that even with a six inch wrench.

Combustion condensate can also get in the threads and cause corrosion.

You could buy an eight point square socket, but my guess is you need to get the car on a lift to achieve proper leverage. Two sets of hands as well. One to hold the wrench in place.

If the oil is still in the motor you will never get it hot enough to expand the aluminum.

I would get the car on a lift, get the oil out, and carefully heat the area until the oil is starting to boil, then put the square socket or wrench on the thing and have your assistant hold and lightly tap the whole affair while you are pulling.

If the thing was overtightened because it is a chronic slow dripper then put a pan under car. Also, if the washer is missing that can cause big problems.

Good luck