Has anyone looked at this Japanese company ester based cleaning additive, there are some USA case studies on the D1-Chemical site from an LA company 'Four Wheel USA' ?
http://d1-chemical.com/blog/sod-1plus-english.html
http://d1-chemical.com/blog/cat10/car-usa-la/
http://d1-chemical.com/blog/sod-1plus-english.html
http://d1-chemical.com/blog/cat10/car-usa-la/
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