Ring RLD4 Engine Oil and Fuel Leak Detection Dye. UV reactive dye to locate engine oil, petrol and diesel leaks and hydraulic leaks. Includes 6 x 25 ml vials. Each vial covers 8â10 petrol engine oil leaks or 3â5 diesel leaks. Safe for all oil types (mineral, semi-synthetic, synthetic). Brand new. MPN RLD4.
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