US Patent 8163044 - Nanoparticle fuel additive

http://www.freepatentsonline.com/8163044.html

This patent teaches how a mixture of metal oxide nanoparticles can be used to improve the efficiency of automobile fuel. Claim 1 reads:

1. A fuel additive consisting of a combination of zinc oxide nanoparticles in an amount of 70 to 80% by weight, magnesium oxide nanoparticles in an amount of 10 to 23% by weight, cerium oxide nanoparticles in an amount of 1 to 5% by weight, copper oxide nanoparticles in an amount of 1 to 5% by weight and ferric oxide nanoparticles in an amount of 1 to 5% by weight.