Just thought I'd explain how I detail my car batteries. I wash them with soap and water, then dry them. Then I spray them with Pledge furniture polish and wipe them dry. I never use grease on the terminals and as in my 2003 4Runner the OEM battery looks exactly like it did the day I took the SUV home. It's still shiny new and the terminals look new, too. I also use Pledge around the rest of the engine compartment and the while area looks like the day the car was first sold. I don't like a messy battery and I don't like using that red grease or products like that. Also I've never had a spot of rust or other corrosion around the battery or underneath it around the fender well.