NEW DUDE HERE >I have had this service van ford ever , i do have two leaks now . The one i fixed 3 yrs ago is still holding the frt main was leaking so i cleaned real well ,oil free with gas and used a tube of black RTV all around the frt. mail seal ? it worked >>>>>> now my rear is getting bad and dont know if that trick will work for it , ANYONE ever do the rear main seal this way , just dont want to pull the trans to do the rear main .

 

Any time had that problem just replaced the seal with new.
I am wondering why you are having seal problems to start with. If the PCV system is not working properly allowing pressure build up in the crankcase, wondering if that isn't causing seal leaks unless you know of another reason.

 

Hanky , so just check the PVC valve ? take it off and blow thru it and see that its not plugged ? im at 180,000 miles >> im guessing its up top some place in plain site ?