Report Liquidating my 15% off SI account in 1963-64 Avanti Posted April 15, 2010 · Edited April 15, 2010 by tsterkel for those who read my fire sale of my Studebaker International Account Credit, here is a bonus. A local company is liquidating SKIDS of CIplus-4 oil, At Their Cost. This is NOT CJ-4, and thus has the slug of ZDDP which many think is needed for pre-90's performance car performance. Price? far less than those rip off bottles of ZDDP additive you see. Contact me for info on this deal using the e-mail option, I no longer check these fora. cheers!