Gulf Coast Bypass Filters  
   Manufactures and sells aftermarket automotive oil filtration systems that use ordinary paper towel or toilet paper rolls instead of expensive filter elements.
   http://www.bypassfilter.com/

SynLube  
   Produces synthetic automotive lubricants and coolants, as well as high-performance filters. Offers direct sales online.
   http://www.synlube.com/

Fastoil Corporation  
   Manufacturer of the Synergyn product line including synthetic racing oil for street or strip. Online ordering.
   http://www.fastoil.net/

Pure Power Lubricants  
   Offering a complete line of Pure Power lubricants and filters. Online ordering and informative articles available.
   http://www.gopurepower.com/

Castrol International  
   Official site. Producers and marketers of lubricants and allied products worldwide. Site contains information about Castrol products, company information, and motorsports.
   http://www.castrol.com/

Kemco Racing Products  
   Manufacturer of fuel, oils, fuel additives, oil additives, and octane boosters.
   http://www.kemcooil.com/