I had absolutly no problems till I put in a new OEM battery after 4 years.. Been corroding ever since. Had the dealer check the charging system and they found no shorts anywhere. I read it might be a very slight gas leak around the terminal post. I will be changing the terminal wires next week to see if that helps
This stuff works fine. I made a spray shield out of cardboard and gave the terminals two good coats. Then I put those felt red and black "washers" under the terminal clamps for good measure. No corrosion at all in 7 years.
Most battery manufactures batteries seap through the terminals. The only ones that I know that don't are Interstate and Ultima. Every Ford I have ever owned has done this except for the factory on my Cobra