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GC-Camaro · 02-20-2011, 05:35 PM

You can send a sample to http://www.blackstone-labs.com/ and have it checked. That way you know how it did and decide when to change it next time.

02-20-2011, 05:35 PM	#15
GC-Camaro Drives: 2014 Impala Join Date: Apr 2009 Location: Grove City, OH Posts: 607	You can send a sample to http://www.blackstone-labs.com/ and have it checked. That way you know how it did and decide when to change it next time. __________________ 2010 2SS/RS