[lateapex]

Some of you may be familiar with this article, but it appears that it is best to switch gasoline brands at certain intervals to minimize deposit buildups.

The author says he works for the largest gas retailer in the world, has 28 patents, and his specialty is gasoline additives. He has invented some for his employer.

http://vettenet.org/octane.html

[zlexiss]

To add to Bob's post, I remember an old Tom and Ray (or other car advice column) back in the mid 90's that listed out the companies used the same amount of additives in all grades, and another list of the companies that used different amounts in different grades. I've tried searching but was never able to find the list, though it's been largely superceded by the Top Tier standard.

Is there a top tier equivalent for diesel?