What a coinscidence, I just changed the fluid in my Fragramatic last night. I ordered the fluid straight from the factory for around $13. The reason for changing it is, the fluid had lost its color and all 3 tubes were sort of yellowish. I siphoned the old fluid out and it was very viscous - almost like glycerine or very thick syrup. The new fluid was much more fluid, about like 10wt motor oil or thick cooking oil. I can't remember whether the fluid I used before was factory or "aftermarket"; all I know is that the colors faded to nothing and it is definitely thicker than the new stuff.