Not Ranked
If its on the sidepipes (Stainless steel) Locktite Aluminum Brightener Jelly works great. (15% phosphoric acid) Brush on, leave set 20 min and rinse off with water. Sold just about everywhere.
https://www.walmart.com/ip/Aluminum-Jelly/21863783
Last edited by spdbrake; 10-13-2018 at 04:18 AM..
Reason: incomplete
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