I've only seen it at Advance Auto Parts. By the way, I'm only comparing it to the Pennzoil and Castrol High Mileage varients based on pour point. Havoline also lists CCS viscosity, but Pennzoil and Castrol don't. CCs of Havoline HM 10w30 is 6500 at -25C, which is equal to Motorcraft 10w30, but the Havoline HM is pretty beefy with a 12 CST viscosity at 100C. Pour point for the Havoline is -27F; Pennzoil High Mileage's pour point is only -22F.