I have always used Rislone oil treatment in all my oil changes,@3,500mi. I used to be able to buy it for $6.00 a gal. but now only quarts are available and Bars Leak Inc., who now owns Rislone sells quarts at $6.00+ a quart!! So no more Rislone for me *&^%$#!! I have been a religious GTX 10w30 user. Havoline now has an oil that they’re marketing w/Slick50 in it. Has there been any news on this oil, any reading that exists that I could view, or any comments regarding this oil? I really don’t like the idea of switching from Castrol to Havoline but I feel naked without my Rislone….[censored] Bars Leak!! Any ideas on alternative solutions to this problem. The vehicle is a 2500hd Ram 2002 5.9l gas. I've got 94k on it and she burns a qrt. between changes. I tried 10w30 Syntec Blend but found w/the Syntec Blend I was using almost 2qts. every 3,500mi. Is the Syntec Blend the answer to the missing Rislone or…? Thanks for any help, comments or info offered.