Hola from Mendoza. It is very beautiful here, and hot! There was some initial drama with currency exchange, and the price of the permit. I ended up having to pay 5,100 pesos for the permit, which was way more than I had planned for. If you have proof of a guide, and if you obtain your permit after Feb. 1st, the cost goes way down.
I contacted Fernando Grajales regarding gear transport to Plaza de Mulas, and he was extremely helpful. For fuel I'm bringing 33oz. (X2) +11oz (x1) of white gas, totaling 77oz. I got them filled at Mountain Gear, which was near my hotel. You can also fill them at Orviz. The cost was only like $12.
I am taking the Uspallata bus tomorrow morning to Los Penitntes, where I'll meet up with the muleteer, and begin the long approach.
Also as an FYI, my Spanish is not great, and it has been a challenge communicating. Very few people down here speak English, so I recommend studying up on your Espanol if you want to procure the essential items =)