Liqui-Moly-3350-Leak-Finder-Spray-400ml-Liqui-Moly-3350-P-This-leak-finder-spray-400ml-from-Liqui-Moly-is-a-leak-test-fluid-for-compressed-air-oxygen-systems-&-CNG-gas-vehicles-Once-sprayed-onto-the-surface-it-indicates-where-the-leaks-are-by-forming-bubbles-over-them-making-it-ideal-for-tanks-pipework-hoses-screwed-connections-welded-seams-flange-connections-&-fittings-P-P-It-can-also-be-used-for-repair-work-on-compressed-air-brake-systems-&-air-conditioning-systems-buse