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Old 06-14-2015, 10:16 AM   #39 (permalink)
gone-ot
...beats walking...
 
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The USArmy(*) tested those plugs when they FIRST came out back in late 1970's-early 1980's and they were no better than standard OEM plugs.




(*) U.S.Army Automotive/Tank Command, Yuma Proving Ground (YPG), Yuma, AZ.
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