1999 Mercury Cougar put stop leak fluid in gas tank instead

I was smelling oil from my car and stopped to put a container of "stop oil leak" into my car.

I think I made a big mistake. I put it in my car via the gas tank. I think I should have put it in my oil compartment.

At the same time as putting this in my car I put a container of carberator cleaner in also through gas tank.

Will the stop oil leak stuff ruin my car if I put it in the wrong compartment???