eternabond or dicor self leveling caulk

Here is my situation. I recently bought a 98 lance Truck Camper. It is in great shape. Never any water damage as it was stored inside most of its life. The roof is the aluminum with the white baked on enamel and looks close to new. The seams and around fixtures has some sort of sealant over the top of the screws and flanges. Anyway the sealant on top has yellowed and has tons of hair line cracks visible but none of it has pulled away from screws etc. In other words I don't think it would leak through the sealant that has the hair line cracks. But you never know! I am pretty sure there is sealant under all the flanges and seams,?? as well as this stuff on top.

So I went to the local RV store and told them what I had going on. They gave me a couple options.

1. Do nothing it isn't going to leak unless it has separated.

2. Clean it real good and put dicor self levaling caulk over the seams. This would seal it up.

I threw out the option of Eternabond over the seams. Daryl said I would not use it. I asked why and he said if you ever get a leak trying to get that stuff off is a real PIA. That is why he would use the Dicor.

I watched a youtube video on eternabond and it sure looked good to me. What do you all think about it. Opinions please.

What do you think of option 1. Doing nothing. I will also store inside so it won't be out more than a month a year.

Thanks