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It is totally biodegradable and phosphate free. Oxidation & Rust Removal Ultrasonic Cleaner Fluid Solution 5L Cleaning Parts. Other applications include oxides resulting from soldering or welding, cleaning rusty / corroded tools.
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eBay
Kawasaki GPZ1000RX Rebuilt Carbs, stripped & ultrasonically cleaned, rebuilt with new gaskets / seals / bolts etc, see pictures for overall condition.
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eBay