Originally Posted By: rooflessVW
Originally Posted By: webfors
Originally Posted By: WobblyElvis
My son has a 2008 CTS with a 3.6 DI engine. Never use any kind of engine cleaner. 180,000 miles without a problem. I wouldn't waste my time and money.
I would love to see the condition of your intake valves, compared to someone who regular cleans his/hers.
Does it really matter what they look like if there are no drivability concerns?
Yes it does! This is an oil forum where we obsess about these things. One with little to no deposits from an owner who was obsessive about cleaning his intake, vs one from an owner that has done nothing but regular maintenance. This would include a full suite of dyno, fuel economy, and drivability tests. We could finally put this issue to rest
Originally Posted By: webfors
Originally Posted By: WobblyElvis
My son has a 2008 CTS with a 3.6 DI engine. Never use any kind of engine cleaner. 180,000 miles without a problem. I wouldn't waste my time and money.
I would love to see the condition of your intake valves, compared to someone who regular cleans his/hers.
Does it really matter what they look like if there are no drivability concerns?
Yes it does! This is an oil forum where we obsess about these things. One with little to no deposits from an owner who was obsessive about cleaning his intake, vs one from an owner that has done nothing but regular maintenance. This would include a full suite of dyno, fuel economy, and drivability tests. We could finally put this issue to rest
