This is the list now posted on NHRA rules updated today.
Zip.
Oil Retention Device Class Specification List
Class NHRA Accepted SFI Spec 7.2 SFI Spec 7.1
Sportsman Premitted Premitted Premitted
Pro Premitted Premitted Premitted
Super Pro Premitted Premitted Premitted
Advanced E.T. Required Premitted Premitted
Top Dragster Required Premitted Premitted
Top Sportsman Required Premitted Premitted
Stock Eliminator Premitted Premitted Premitted
Super Stock Eliminator Premitted Premitted Premitted
Super Street Premitted Premitted Premitted
Super Gas Required Premitted Premitted
Super Comp Required Premitted Premitted
Competition Eliminator Required Premitted Pro Modifieds
Top Alcohol Funny Car Prohibited Prohibited Required
Top Alcohol Dragster Prohibited Prohibited Required
Pro Stock Motorcycle Required Premitted Premitted
Pro Stock Cars Required Premitted Premitted
Funny Car Prohibited Prohibited Required
Top Fuel Prohibited Prohibited Required
NHRA Accepted List Oil Retention Device (Updated 01/15/2008)
Manufacture Phone Number NHRA Accepted SFI Approved
Champion Racing Engines 317-335-2491 Yes No
DJ Safety 323-221-0000 Yes 7.2
DRE 217-454-5289 Yes 7.2
Engine Diapers R US 805-610-1340 Yes No
Harper's Upholstery 505-4373293 Yes No
J & J Performance 330-567-2455 Yes 7.2
Powell Racing Equipment 419-542-8821 Yes No
RamJet Racing Products 513-738-0891 Yes 7.2
RCI 909-939-1908 Yes 7.2
Russler II Racing 951-488-4200 Yes No
Security Racing Products 425-557-6508 Yes Yes
Stroud Safety 405-632-2022 Yes Yes
Taylor Motorsports 714-630-7850 Yes Yes
Vanson Leathers 508-678-2000 Yes No