Which is cleaner, running vegetable oil and no cat or dino and a cat? Is there something removed with a cat that does not matter what oil is burned?

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-disav

99 E300 TURBODIESEL Astral Silver 282K - AMG brakes, suspension, monoblocks, speedo & interior - Full Load Maxed on IP by custom Speed Tuning USA Chip - T3/T4 Garrett - EGR/MAF delete
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