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Old 10-04-2012, 11:07 AM
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Orient330iNYC Orient330iNYC is offline
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Originally Posted by vrmoreno3 View Post
Curious, does anyone use the gas additive for valve cleaning? Or is that a no-no.
it will only clean the injector.

the issue with a direct injection engine, the injector is in the cylinder. gas additives worked on manifold injected cars as the fuel would wash over the intake valves on its way into the cylinder.

with a direct injection engine, the fuel is injected directly into the cylinder, so the fuel (and cleaning additives) never touch the back of the intake valves.
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