I've tried a bunch of stuff over the last umpteen years. So far, the best stuff I've found is CRC Marine 6-56. But you need to re-apply it every 3-4 months or so, which I sometimes forget to do. I use this stuff to spray down the engine (lightly) at every 100 hour maintenance. It also is good on fishing rods and reels.
CHawk 25 DLX
Thanks chawk_man for the useful comments. I appreciate it.
The corrosion control is must when you are using terminals.You have to use good quality products that protects the metals from corrosion.There are many products that protect iron from corrosion but our product is the best because a small quantity of this product can be used to protect any type of metal from corrosion and damage also.