Yellow vs blue Fram part number TGA7351 Purolator part number PA24690 Which one is better? Both of these are very *lightly* oiled media The Tough Guard has yellow media; the P1 is blue. Fram's is more widely available, but of course the P1 can be ordered online if it's better. The Fram TGA7351 is now US-made as of current stock I saw at Walmart today. I don't know where the PA24690 is made. Both companies' regular filters are made in China. The Napa Gold 6017 (Wix 46017) on my car now is made in Poland.