Subaru Upper Engine Cleaner SA459

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Subaru Upper Engine Cleaner contains a powerful foaming agent to efficiently clean the induction system and combustion chamber of the engine: -Removes gum , varnish and carbon depo sits from the combustion and intake systems. -Helps smooth rough idle. -Removes hot spots and marginal increases in compression ratio which results in pinging. -Reduces pollution and improves fuel consumption. -Improves performance. Show more