Preferred Customers will receive a new, limited-time promotional offer on Wednesday, Sept. 21. P.C.s who order more than $50 in AMSOIL products receive free shipping. This offer is effective from 9 a.m. Central on Wednesday, Sept. 21 to 11:59 p.m. Central on Tuesday, Sept. 27. P.C.s who ship to Alaska, Hawaii or APO/FPO addresses are ineligible for this promotion. All other P.C.s with an active membership and a valid email address on file will receive the promotion code for this offer.