Hi Eric,
I really like fluid film, also known as waxy oil. I treated the seam behind the drivers seat from the inside when I had it open and it worked it’s way to the outside of the body. No paint will do that. It should still be in there protecting the area. I did inside the doors, sprayed it up the A and B pillars and the whole underside. Need to do it again as it has been four years now. HTH 

Dan

Sent from my iPhone

> On Jan 19, 2022, at 2:51 PM, Eric Caron <ericcaron96@comcast.net> wrote:
> 
> A related question. 
> 
>        Would the inner area seam be a good candidate to treat with a POR-15 product?  Surface rust and mostly paint but the area needs the best protection I can come up with. 
> 
> Eric Caron 
> 85 GL Auto 
> 
> 
> 
>> On Jan 19, 2022, at 11:31 AM, Eric Caron <ericcaron96@comcast.net> wrote:
>> 
>> Hi folks,
>> 
>> I have some seam rust just starting on the rear wheel well seams.  I removed the rear cabinets and can access the rear section. 
>> 
>>       No holes but some surface rust on the inside and paint on the outside flaking and rust starting to show. 
>> 
>> So, what are some options for slowing this down?
>> 
>> While in this area I will also add sound deadening material.  The old fiber glass was intact and dry. 
>> 
>> What are the seam rust treatment options people might do?
>> 
>> Also how would you approach the sound deadening and insolation? 
>> All ideas for products and steps appreciated. 
>> 
>> I have Fat Matt here in a roll and Similar fiber glass insolation. 
>> 
>> I have fluid film and som rust conversion primers. 
>> 
>> But, I’d love some tips from those that have done this work.
>> 
>> Eric Caron 85 GL Auto