MOTORCRAFT OIL FILTER / 8 OZ. REV-X OIL ADDITIVE Motorcraft Oil Filter & REV-X Oil Additive 4 OZ Bottles (2) The word is out on the best kept secret in racing! REV-X Racing Oil Additive is the secret weapon that racers everywhere are using to get to the front of the pack and into... MSRP: Was: Now: $95.00 Add to Cart The item has been added