Originally Posted By: demarpaint
Originally Posted By: 1001hobbies
Ok, I heard back from Phil Fabien, Engine Performance Development, V-Engine Engineering.
On the issue of deposits forming on the valves due to no gasoline with detergent being sprayed on the backside of the valve in a direct injected engine he said the following. He stated that fuel washes away deposits on a port injected engine, and that EGR can increase deposit formation, however, the 3.5L EcoBoost engine does not have an EGR system. Ford uses intake and exhaust cam phasing to provide internal EGR to the cylinders.
In regards to Jalopnik claiming Ford used water injection and that is why the valves are so clean he said there will always be people who do not believe what they have accomplished and how they explain they made that accomplishment. Basically, he said because of this they do not plan to address each one of the doubters.
In my opinion he is invoking one of my favorite Chinese proverbs:
"A wise man need not prove himself."
For those not into Chinese culture, basically it is saying a wise man, one who knows what is real, does not need to prove himself when he speaks of these things, because reality will prove the point.
It speaks volumes when people find out for themselves as opposed to someone trying to explain it to them.
Steve
Good info, thanks for posting. I still would like to see how they hold up in real world day to day use, but I think Ford's got it!
I'd love to hear what he has to say about Ford engines that "specify" a 20 grade oil and the testing they went through to prove it was up to the task. Yes they still have engines that spec other grades, I'm talking in particular about engines that Ford makes that call for 20 grade oil. I'd love to hear from someone like him, it might help to put that debate to bed.
I am sure there are more knowledgeable people here than me when it comes to oil, but my understanding of the reason for going to 20 weight oil has to do with tighter bearing clearances to help eliminate unwanted movement, other than desired axis movement, in order to provide more fuel efficiency and reduce wear for improved endurance.
Steve