Have you ever needed to change a light bulb in your car? You probably went to the local auto parts store and asked for a new bulb, then watched as they hassle you into buying useless light bulb grease. Do you really need it? Will it help? Will it hurt? Do you have the extra cash? These questions came up and turned into a loud argument at the local auto parts store with my friend refusing to be taken for a fool.
It all started when my friend from work had a taillight bulb out. Since I do all the maintenance to his 2007 Camry he asked me for advice. It took me literally twenty seconds to ask him to pop his trunk and remove the bulb. Then I sent him to the auto store and said, "Get one of these. Two if you can afford them. And don't get the grease, you don't need it. It should cost you about four dollars.". He took me on my word and proceeded to the store where he got into an all out verbal confrontation with the clerk.
He called me and said they didn't have a single pack. He was tight on money and wanted to know if there was another store closer with single packages of bulbs. Regrettably the other store was about four miles away and simply wasn't worth the trip. Then I heard the argument. Apparently the clerk thought no one in their right mind would sell single package tail lights. He is wrong. Plenty of stores do. Also without my friend knowing he tried to slip in the useless light bulb grease for two dollars more. A few unfriendly words later and the clerk was strong on his opinion I was an idiot for telling my friend not to buy the grease. This is Memphis. My friend very forcefully told him where he could go and how to get there.
Anyhow this story happens all over the country and don't let it happen to you. You do not need any light bulb grease, it will cause harm in the long run. The main purpose behind light bulb grease is to prevent corrosion on the current bulb and ease replacement for future bulbs. The problem about shoving a gel substance into an electric socket is that with time is becomes thick and causes problems. I've changed many bulb sockets because of the grease thickening and shorting out the terminals within the socket. This may only be a fifteen dollar fix to replace the harness, but it may cost consumers one hundred dollars to have their vehicle replaced at a dealership.
Light bulbs go out about every two years in the real world with driving habits of the modern busy person. Corrosion is not a problem in this scenario. With properly sealed light fixtures corrosion should never be an issue. Therefore you can rest assured if you don't use the grease then you won't have corrosion problems because there is generally never a corrosion issue. I have seen it before, but only in leaky fixtures where water is continuously in the area. Light bulbs are also very easy to remove without needing additional help by the lubricant grease. If you need help changing a light bulb strength wise then I don't think you need to be changing a light bulb. Never the less you can still know the process and not become one of the millions of consumers who buy needless items because someone says they need it.
To make a long story short, do not buy light bulb grease and put it on taillights, headlights, or any other light bulb in your vehicle. It will cause harm in the long run and just waste two dollars you could use on something else in your life. Don't let the clerk at the auto parts store pressure you into buying the light bulb grease that you don't need. This is just my opinion though.