Another option is NAPA
they sell an test kit for $15 which is half of what Blackstone is now charging
The napa part# is 4077
they use ALS Tribology
You can also go to a CAT dealer and they do a test for around $19
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2004 Boxster S 6 speed - DRL relay hack, Polaris AutoTop DIY
2004 996 Targa Tip
Instructor - San Diego region
2014 Porsche Performance Driving School
2020 BMW X3, 2013 Ram 1500, 2016 Cmax, 2004 F-150 "Big Red"
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