Originally Posted by Navi
If this was just a small subset why was I put on a 1000 car waiting list for parts?
I know modifications were made on 2016+ Ecoboost 3.5 liters 1st gen but 2nd gen and prior to 2016 seem to have this issue. There are hundreds of message threads on this issue. In fact one guy has a comedic Youtube video of a dozen cold start rattles because the dealer said all the trucks sound like that and he wanted to make sure he had proof.
Ford in the f150 sells like 70,000 of these a month, if only half have the Ecoboost it's still over 1000 a day. They have been out since 2011.
So some people on the internet making a lot of noise still does not indicate a wide spread issue.
Like I said, I'm not saying it doesn't happen, I'm just saying a different oil is not the cure once the problem is detected.
Just so you know I use a non approved oil in my Ecoboost, either Castrol 0w40 and more recently Valvoline 15w40 hdeo. So I am not saying the bulk oil is fine spiel ( not that I disagree)
I'm in the camp of the dilution in theses engines is not the issue, under 5% doesn't even get on my radar. I do feel an oil that handles soot better is warranted and oil that are low in calcium to help prevent lspi should be used.
tl;dr
If you have the rattle oil is not the fix.