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johnunit · 03-26-2012, 04:10 AM

An injectory cleaner may help in a neglected car, once every 6 months at the VERY most, but beyond that no additives have proven mileage advantages.

03-26-2012, 04:10 AM	#5 (permalink)
johnunit EcoModding Lurker Join Date: Dec 2011 Location: Toronto Posts: 76 Thanks: 14 Thanked 11 Times in 9 Posts	An injectory cleaner may help in a neglected car, once every 6 months at the VERY most, but beyond that no additives have proven mileage advantages. __________________ 2001 Prius - 170,000 KM - just got it (no consistent FE numbers yet)