u/Desperate_Act_6765

2017 Kia Soul GDI 1.6L Gamma Engine with 63,000 miles - Service Recommendations

Edit. I'm the original owner.

My Kia Soul had issues last year with the spark plugs misfiring. I had them replaced and the engine coils and at that l time became aware of the problematic GDI engines.

I am going to replace the oil later this month with Valvoline Restore and Protect. I would like to do an intake valve cleaning or Liquid Moly Engine Flush prior to the oil change. I am going to do them both just at separate oil changes.

Which one, intake valve cleaning or a liquid Moly Engine Flush, should I do first because it would be more beneficial to start with?

Thank you.