I just want to point out that you don't need either. backing soda did nothing and the oil probably gave the tire a lil shine. if you ask me that stuffs expensive. get a scotch pad and water and scrub till you see black in the water. you'll remove the brown layer revealing fresh black rubber. Throw in some simple green or dish soap for really bad tires. and if tire shine is your thing use it or cooking oil or whatever lol
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