There is a Lot of Heat produced when a Male Thread is Joined with Female Thread 

so They Both Expand & then when They Cool, Leaks Can Happen ~ So Most, if not All,

Thread "Seal" Materials are meant to do DoubleDuty ~ Lube durring install & Seal after

the fact ~ The Tranny Plugs are Tapered & Quite Susceptible to that Install HeatUp ~

RTV or Teflon Tape works Well ~

                                                        ORR ~ DeanB

On 5 Aug , 2017, at 2:00 PM, steve meassick wrote:

> I am changing the transmission oil and am wondering if thread sealer should be used on the drain plug.  It looks like none was used on the fill plug but may have been used on the drain plug.
> 
> 
> 
> Steven Meassick