While guacamole is more solid with avocado, tomatoes, onions, chiles, spices, etc., Guacamolito is more salsa-like, more liquid in nature and used like a sauce atop of items.
"And it get's even awesomer when we take a deep-fried gordita shell, smear on a layer of our special guacamolito sauce, and wrap that around the outside!" Narrator, "Taco Town" commercial
by Greg B. February 8, 2008