I am not terribly worried about meeting what Ford wants. Also having 2015 STI this is when I started to go nuts on reading about oils. Go on to NASIOC and read the countless threads and all the references to BITOG forums. Subaru recommends a 5w-30 resource conserving oil for my EJ257 which has been shown to not quite be up to snuff on anything other than a soft morning commute in that engine. Being that the GF5 oils are made to sheer in order to give better MPG (thanks CAFE) and turbo Subaru engines are hard on oil I now do a lot of research on my own before deciding what to use. From what I gather this little 1.6 ecoboost engine is not to hard on oil, but anywhere else in the world Ford recommends a 5w-30 oil, again thank you CAFE laws and that makes me think. I choose Motul X-Cess 5w-40 for my STI.
For the ZDDP, I was just stating that it has a good add pack as its still on the SL cert if I am not mistaken before the tree hugging people got word that it could potentially ruin your cars emissions systems it was a good cheap way to ensure you have that barrier of protection when the oil viscosity fails. Is it the best for our engines? I have no clue I am also not a mechanical engineer (software engineer
) but it makes me feel good inside and that has to count for something right?
Thank you and I do have a lot of fun with this little guy, more so than my Subaru which makes me wonder why I even have it in the first place as it sits under a cover most of the time draining my wallet..