By burning regular gas, the carbon will build up on the back side of the valves quicker. This carbon will eventually break away and damage the turbo blades. Ford does not currently have a process for cleaning the valves. You will want keep the PCV system maintained
http://www.fordedgeforum.com/topic/19821-cannot-decide-titanium-20t-vs-titanium-35l/?hl=carbon&do=findComment&comment=146879
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