I have a 1997 Explorer, 4WD. I sent in for routine maintenance and the
dealer told me about the front differential leak. They said the repair
charge will be $331. Can someone briefly explain to me about the impact
of this problem (such as it will damage the engine? or ???)? Is this a
serious proble that has to be fixed right away? Thanks. $331 is not
cheap. If it has to be done, I will get it done.

Thanks.