Originally Posted By: leje0306
Originally Posted By: Impatient
I was looking for some Ecoboost 3.5 UOAs when I stumbled onto this thread.
Questions and observations:
I heard 2018 Ecoboost 3.5 has been "refreshed" so this oil spec change may not apply to older EB's
I am curious about "best oil" for 2015 EB 3.5 that sees months of little-to-no driving then gets a good long hwy trip, followed by some daily twisty and dusty dirt road use with some lo-to-mid gear altitude changes (ie, my "RV" gets a trip to the mountains a couple times a year). If I'm going to venture away from Motorcraft semi-syn, which regularly-available full syn might be best for a turbo DI Motor subjected to those conditions? Evidently I have some rudimentary OLM which I've never seen nor heard from, except while resetting it after my last oil change. I assume it just lights up to tell you when you need to change the oil, instead of providing a percentage at any given point in time. I intend to keep those OC's between 5k and 6k interval, just for the heck of it.
I happen to know about one of those "thick" 0w30's Garak refers to because I run GC (BC) in my turbo Subaru, for better or for worse, but Assume I shouldn't do this to the Ford, at least till out of warranty 3 years from now. That said, I don't see a need to use a "light" 0w30 since I live in Texas, and those mountain trips are not in the winter. But, again, wondering if GTL-base, or mid-to-low SAP, or other "differentiators" matter to a turbo DI engine subjected to the conditions I described? But yes, I am very disappointed with my fuel economy in the Ford, so I'm tempted to give "points" to an RC oil, or "thinner" oil, if it would give me an extra 1 mpg, without increasing wear, or causing other issues given the engine-type. But it needs to meet Ford's "-946" spec for now, though I have no idea what that spec adds to the normal SN ILSAC GL5,
Sorry, probably wandered way off topic but at least my questions are about an EB.
Gen 2 came out in 2017, if that’s what you’re referring to?
Yes referring to Gen 2. Though not sure if all Ford trucks got Gen 2 this year. But, I was co-mingling gen2 with 0w. Sorry if wrong.
Any thread you can point me to that discusses best oil attributes for an Ecoboost?