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Is there a difference in injector cleaning products? Are all products good or all bad? This is a scientific and practical test that indicates the amount of nitrogen in the product, and nitrogen is the active ingredient in cleaning injectors. Sources: https://www.astm.org/d6201-19a.html https://www.deepdyve.com/search?query... Follow us on social media: Facebook: / abdulcartech Twitter: / abdulcartech Instagram: / abdulcartech TikTok: / abdulcartech1987