Seriously, I have 153k on mine, no issues with buildup as far as I can tell.
GDI intake valve cleaning
Since our engines are the Gas Direct Injection type has anyone done a cleaning of the intake valves? I'm in the process of doing it now using CRC GDI iVD Intake Valve and Turbo Cleaner. I'm at the 1-hour heat soak point right now so I though I'd take a break to make this post. If it all works well then I'll post my procedure and it is pretty simple and straight forward so fingers crossed. Wish me luck.
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