Thread: ('11-'14) FB20 Oil Analysis Thread
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Old 11-20-2012, 02:46 PM   #60
Commander Keen
Scooby Specialist
Member#: 319157
Join Date: May 2012
Chapter/Region: MAIC
2012 Impreza 4DR 5MT


When they send you the report back do they give you a recommendation?
There's a check box on the form where you can indicate if you're interested in extended intervals. Then they'll tell you whether you should go longer next time.

I did some research on tbn last night and I understand what it is now, just not sure how to apply it
Basically, if it's less than 1.0, don't wait as long to drain.
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