I believe that the not-street legal phrase is because it is not certified by API for street use under the new SM ratings.

http://www.aa1car.com/library/api_motor_oil_classifications.htm

either way, the Valvoline not-street legal oil has 1600ppm zinc in it if memory serves...i'll check again though


68 GTX 440cid 727 3.91SG 08 E-92 In God we trust...all others must pay cash