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08/10/2021 9:16 pm
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I have a 2013 Subaru WRX with 39,000 miles on it. I want to keep up with the common carbon buildup issues. Can I run gumout in the engine? And how frequently should this be done?
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09/10/2021 6:07 am
Well realized the only way to really get the carbon out is to use GDI valve cleaner which is spraying the intake I have a video on that cleaning intake valve Scotty watch that
