Rickyp, I used the Lyman Moly lube for quite a while because it supposedly didn't need the heater. I eventually bought the heater, and Wow, what a difference! Works great, especially if you are working in a cool area, like an unheated basement. By the way, I switched to LBT Blue Soft, and am thinking of getting a second sizer so I can keep the Lyman Moly in it as it seems better in a few of my applications. It's good stuff! Hope this helps.