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Old 07-21-2017, 08:17 AM   #53 (permalink)
Boss_302
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Join Date: Feb 2013
Location: NY NY
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You should look into Shell V- power. The additives have good cleaning properties to reduce carbon build up and maintain the injectors. But still the only way to maintain the injectors with high mileage is to pull them out and have them flow tested and cleaned properly.
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