Metal Check is an analysis kit for reciprocating engines. The oil and filter analysis kit expands results for turbine engines. Aviation Laboratories has 21 years of history providing aviation-only laboratory services. The company is a leader in GA oil and oil and filter analysis in the United States. There is a large database of engine results available for the GA industry. Online results, including historical information and trending analysis, are available. For more information visit www.avlab.com or call (713) 864-6677.