As another reviewer mentioned I don't think theres any difference in which Goop you buy other than the packaging that encourages folks to buy it for the specific purpose stated. I use it for everything from shoe repair to the leather seats in my SUV and it has never disappointed me and whether its the RV or the All Purpose I cant tell the difference. The only reason I dropped off a star is that it often hardens after a tube is opened even though the cap is on tight. Other than that the product itself is 5-stars all the way and a lot easier to use on many things than Contact Cement because its forgiving in the application process.