"Tim R" wrote in message
...
So when is grease on the terminals bad ??

When it gets between the battery post and the clamp.

If it is on the outside it is fine.

Conventional wisdom says when you tighten it down the grease gets squeezed
out and there is direct metal to metal contact.

Whether that's based on data or not I don't know. But that's the way
mechanics do it successfully.


Some mechanics can not be educated. If the grease is any good,not all of it
will be squeezed out so there is direct metal contact.

Think of it, the purpose of grease is to prevent metal to metal contact.

Clean the posts and clamps where they mate and put the clamps on. Then put
the grease or whatever you want on after that.