Methanol vs GDI Induction Cleaning to resolve Intake Valve Coking / Carboning

[sholxgt]

I see mostly Bank 1, is that true, Z?  Maybe airflow is not the same, or it is due to heat soak being greater on Bank 1, thinking back to the melting snow pics once provided by Rich.

True and valid points!! Rear Bank 1 is more susceptible to heat and the elements. Z

Isn't it also the one that gets hit the hardest by the PCV system?

VW's answer to their extreme valve coking issues was to completely redo their PCV system.  Starting in 2015 they went to a whole new design and reports are that it has solved the issue.

[ZSHO]

I see mostly Bank 1, is that true, Z?  Maybe airflow is not the same, or it is due to heat soak being greater on Bank 1, thinking back to the melting snow pics once provided by Rich.

True and valid points!! Rear Bank 1 is more susceptible to heat and the elements. Z

Isn't it also the one that gets hit the hardest by the PCV system?

VW's answer to their extreme valve coking issues was to completely redo their PCV system.  Starting in 2015 they went to a whole new design and reports are that it has solved the issue.

True! same applies on the 15+ Ecoboost platform with its integrated PCV System- IIRC.  Z