Originally Posted by eyeamdaman
I usually fill my boat after each night of fishing to avoid gasoline sticker shock. This makes it tough to tell how much ring free to add, therefore I just guess according to the gallons pumped. My concern is that I may be putting too much ring free in. Is it possible to add too much?
You'd have to put in quite a bit too much to have a concern.
The concern: It can loosen stuff up and cause some fouling of plugs.
Going a bit light is better than going too heavy w/ RingFree.