If you're into additives,and increased life of your vehicle.....try these fuel treatments I have been doing a mix of three(home brew) for years now. I never go to the shop,always pass inspection,no check engine lights,solved issues with used cars,etc.
http://priproducts.com/pdfs/Fl...G%20-%20CONSUMER.pdf
http://www.amazon.com/STA-BIL-...ilizer/dp/B001CAW2DK
http://www.pureenergysystems.c.../17/6900069_Acetone/
http://pesn.com/2005/04/12/6900080_Acetone_and_Ester/
The last link also addresses the lubricity of fuel,and has many references!
Remember,it's today's low grade fuels that are killing engines for various reasons! You can offset this and add much life to your engine by treating the fuel vs the crankcase oil!
This is what you should be worried about from now on......bad fuel!
http://americanelephant.wordpr...nts-you-to-use-more/
http://www.boats.com/blog/2009...e-your-bank-account/