During an oil change over the weekend, I discovered a variation in the Mobil Drive Clean 10W-30 oil color based on the molding logo on the bottom of the plastic bottle. Bottles with the “CCC” logo of Consolidated Container Company contained a traditional honey colored oil. The bottles with the “box G” logo of Graham Packaging held a darker colored oil. I’m assuming the darker color is from moly or boron in the add pack. I also purchased & examined a bottle of Exxon Superflo 10W-30 that displayed a box G logo and a lot number with a similar format as the Mobil DC. On the left is the honey colored Drive Clean CCC logo oil & the right is a Drive Clean box G logo oil, & Superflo oil. Note, the lighting & glass containers are making the darker oil appear a couple of shades darker than actual. The plastic bottle logo’s indicate that Mobil DC is being supplied from 2 separate blending/packaging sites. The CCC logo bottles have a 7 digit lot number printed on the bottom of the adhesive label. The box G logo bottles have a 14 digit plus 8 digit lot number, ink jetted on the plastic. It could also be assumed that box G logo Superflo is blended & filled on the same Graham Packaging line as Drive Clean, since both the red & blue bottles exhibit similar 14 digit plus 8 digit lot numbers. Is Mobil Drive Clean 10W-30 supplied in 2 separate formulations and the darker colored Drive Clean equals Exxon Superflo?