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Re: 2015 3.5EB Ecoboost Pennzoil Platinum 5w30 [Re: Impatient] #4958362 12/21/18 10:52 PM
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The ecoboost gets away with running 87 octane by injecting extra fuel to cool the combustion process. Otherwise it would not like it and would die an early death. Take a look at the black soot on your tailpipes. These run really rich. The stock tune will adjust for the fuel that’s in the tank. Run premium 91+ octane fuels and you will likely see less fuel dilution.

Re: 2015 3.5EB Ecoboost Pennzoil Platinum 5w30 [Re: advocate] #4958364 12/21/18 10:56 PM
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When I had one we ran mid grade as we do with the Cruze … 3/4 now on regular

Re: 2015 3.5EB Ecoboost Pennzoil Platinum 5w30 [Re: advocate] #4958433 12/22/18 02:28 AM
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Artem Offline
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Originally Posted by advocate
The ecoboost gets away with running 87 octane by injecting extra fuel to cool the combustion process. Otherwise it would not like it and would die an early death. Take a look at the black soot on your tailpipes. These run really rich. The stock tune will adjust for the fuel that’s in the tank. Run premium 91+ octane fuels and you will likely see less fuel dilution.


This guy here speaks the truth. I run premium in my Mazda 3, which comes rated for 87 regular. I have zero fuel dilution. Others post some fuel in their sample who run regular, so it seems to agree with real world experiment, at least in my case.

It does make sense from a mechanical stand point as well.

Mid grade doesn’t do much. It’s not even mid grade in most of the country. On the east coast it’s: 87, 89, 93. Seems they are ripping us off with the “mid octane” LOL.

Go full blast premium for one OCI. It’s the cheapest diagnostic / experiment you can do, since pulling the injectors and sending them off or replacing perfectly good fuel pumps is a pain and expensive and won’t change jack.

Premium fuel for 6,000 miles is cheap in comparison and you’ll benefit from extra engine performance at the same time. It’s a win win.

There’s a reason why many manufacturers recently pushed for higher quality gas in the US. They can’t improve upon 87 octane. We have reached the limit. Dosing the engine with extra fuel to cool the combustion in an effort to allow the consumer to run regular gas is RIDICULOUS. The consumer ends up dealing with fuel in the oil as the result.


2014 Mazda 3 Hatch 2.0L & 6spd - Idemitsu 0w20 Synthetic @ $0.75 a quart. (thanks Advance Auto Parts for the awesome deal)
Re: 2015 3.5EB Ecoboost Pennzoil Platinum 5w30 [Re: Impatient] #4958456 12/22/18 04:29 AM
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Bumping the thread to acknowledge some interesting twists this has taken with the premium fuel recommendation. OA has agreed to retest the sample, though I doubt this will “fix” the problem. I will look into the premium fuel aspect; after all, I’ve been running premium in the Subaru, at mfgr’s recommendation. So what if this costs an extra $400/yr.🤬. I am hoping the lead is an anomaly. There are several ways to keep the oil more robust. Castrol-, Mobil-, or Pennzoil-Euro might also help a tad with starting viscosity, although it is debatable if I should deviate from Ford recommended spec. They don’t allow for anything thicker than 5w30 in the manual (for the EB). I suppose I could argue that the Pennzoil 5w30 is just as good/better, but I had hoped to keep this rig for 120k+ miles, ie my goal is far beyond getting to the 60k warranty expiration. Maybe 5w30 is just not good enough.

Last edited by Impatient; 12/22/18 04:41 AM.

15 Ford Transit 250 3.5EB Turbo PPPUP 5w30
07 Subaru OBXT 2.5 Turbo Castrol Euro 0w30
Re: 2015 3.5EB Ecoboost Pennzoil Platinum 5w30 [Re: Impatient] #4958511 12/22/18 07:48 AM
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claluja Offline
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Any chance you (OP) used any farm fuel or off road fuel? Think lead may still be allowed in certain fuels like that, but not sure.


2014 F250 6.7L PSD
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Re: 2015 3.5EB Ecoboost Pennzoil Platinum 5w30 [Re: Impatient] #4958515 12/22/18 08:10 AM
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dblshock Offline
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Run D1G2 low SASP CAFE oil at your own peril...I'd sample a run of Ultra 10W30 full SN assuming no starts below 0F.


05 Lexus GX470 175k
640:1 TCW-3
M1 0W40 XG-3614
Toyo Open Country H/T II

06 4Runner SR5 155k
640:1 TCW-3
M1 0W40 XG-3614
Falken Wildpeak AT3W
Re: 2015 3.5EB Ecoboost Pennzoil Platinum 5w30 [Re: claluja] #4958720 12/22/18 01:19 PM
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Originally Posted by claluja
Any chance you (OP) used any farm fuel or off road fuel? Think lead may still be allowed in certain fuels like that, but not sure.


No. Only possibility is the quickie lube place(s) slipped some additive in while I wasn’t looking, but I consider that very unlikely. Very straightforward usage and maintenance. My oil changes were 5000-7100 mi intervals, this last one was 6150 mi. 1st 3 were Motorcraft blend, then Pennzoil Ultra Plat (5qt of 2017 pureplus version, 6th qt regular Platinum), then all Pennzoil Plat this last time (possibly 5 qt of D1G2, and 6th qt 2017 version). All these were 5w30. NEVER any additives.

Gas? Well, mostly 87 regular, but in mountains, I tried to alternate 86 octane-88 octane, in other words, used mid-grade every other time, not draining tank completely before refill, to keep the average closer to 87. Admittedly, this was imprecise. No extra-sketchy gas stations that I recall. I will say that going from Texas regular (currently under $2) to mountain-state pricing, and then bumping to mid-grade grizzled me, especially since I used a lot of gas this year (14k miles since June). There were several days in there with 700+ “non-stop” miles, and lots of elevation change. No towing. No noticeable misbehavior by the motor. I used the manual shifting buttons and tow-haul (to keep from lugging the motor as much as possible) when doing steep roads...some forest service roads. Generally, not heavy-footed driving.


15 Ford Transit 250 3.5EB Turbo PPPUP 5w30
07 Subaru OBXT 2.5 Turbo Castrol Euro 0w30
Re: 2015 3.5EB Ecoboost Pennzoil Platinum 5w30 [Re: Artem] #4958722 12/22/18 01:22 PM
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Originally Posted by Artem
Originally Posted by advocate
The ecoboost gets away with running 87 octane by injecting extra fuel to cool the combustion process. Otherwise it would not like it and would die an early death. Take a look at the black soot on your tailpipes. These run really rich. The stock tune will adjust for the fuel that’s in the tank. Run premium 91+ octane fuels and you will likely see less fuel dilution.


This guy here speaks the truth. I run premium in my Mazda 3, which comes rated for 87 regular. I have zero fuel dilution. Others post some fuel in their sample who run regular, so it seems to agree with real world experiment, at least in my case.

It does make sense from a mechanical stand point as well.

Mid grade doesn’t do much. It’s not even mid grade in most of the country. On the east coast it’s: 87, 89, 93. Seems they are ripping us off with the “mid octane” LOL.

Go full blast premium for one OCI. It’s the cheapest diagnostic / experiment you can do, since pulling the injectors and sending them off or replacing perfectly good fuel pumps is a pain and expensive and won’t change jack.

Premium fuel for 6,000 miles is cheap in comparison and you’ll benefit from extra engine performance at the same time. It’s a win win.

There’s a reason why many manufacturers recently pushed for higher quality gas in the US. They can’t improve upon 87 octane. We have reached the limit. Dosing the engine with extra fuel to cool the combustion in an effort to allow the consumer to run regular gas is RIDICULOUS. The consumer ends up dealing with fuel in the oil as the result.



What is the evidence to back this theory of using higher octane will offset the need for fuel dilution. There are plenty of examples of were consumers will buy an engine were higher octane is recommended. Chrysler HEMI is a example.


make the inside of your engine oil cap white.
don't use.
Re: 2015 3.5EB Ecoboost Pennzoil Platinum 5w30 [Re: dblshock] #4958743 12/22/18 01:44 PM
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Originally Posted by dblshock
Run D1G2 low SASP CAFE oil at your own peril...I'd sample a run of Ultra 10W30 full SN assuming no starts below 0F.


I didn’t even know there was such a thing as D1G2 until this fall. But, From my readings, I thought D1G2 would be a good thing, given the Ecoboost is a GTDI engine. The current fill is Ultra again from my “stash”, and I’ve been fretting it will not be a good fit, because it is NOT D1G2 (it’s the “older” lotso Ca, minimal Mg concept). This UOA results imply to me the oil I just changed out and UOA’d was 5qt jug of the latest Platinum (D1G2), and pretty sure the 6th quart was older D1 not G2.

I run the slightly thick Castrol 0w30 Euro in my out-of-warranty Turbo Subaru, and it retains good (11ish) visc on its slightly-longer-than-recommended 4500-5000 mi OCI’s, but I wasn’t going to stray too far off Ford’s specs until warranty expires.

After seeing the UOA, I’ve thought of sucking out 2-3 qts of the current fill and replacing with Platinum Euro, again, to bump up the visc by a point or so. But not sure how smart it is to mix A3B4 oil with A1A5-type.

Last edited by Impatient; 12/22/18 01:49 PM.

15 Ford Transit 250 3.5EB Turbo PPPUP 5w30
07 Subaru OBXT 2.5 Turbo Castrol Euro 0w30
Re: 2015 3.5EB Ecoboost Pennzoil Platinum 5w30 [Re: dave1251] #4958765 12/22/18 02:04 PM
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Originally Posted by dave1251
Originally Posted by Artem
Originally Posted by advocate
The ecoboost gets away with running 87 octane by injecting extra fuel to cool the combustion process. Otherwise it would not like it and would die an early death. Take a look at the black soot on your tailpipes. These run really rich. The stock tune will adjust for the fuel that’s in the tank. Run premium 91+ octane fuels and you will likely see less fuel dilution.


This guy here speaks the truth. I run premium in my Mazda 3, which comes rated for 87 regular. I have zero fuel dilution. Others post some fuel in their sample who run regular, so it seems to agree with real world experiment, at least in my case.

It does make sense from a mechanical stand point as well.

Mid grade doesn’t do much. It’s not even mid grade in most of the country. On the east coast it’s: 87, 89, 93. Seems they are ripping us off with the “mid octane” LOL.

Go full blast premium for one OCI. It’s the cheapest diagnostic / experiment you can do, since pulling the injectors and sending them off or replacing perfectly good fuel pumps is a pain and expensive and won’t change jack.

Premium fuel for 6,000 miles is cheap in comparison and you’ll benefit from extra engine performance at the same time. It’s a win win.

There’s a reason why many manufacturers recently pushed for higher quality gas in the US. They can’t improve upon 87 octane. We have reached the limit. Dosing the engine with extra fuel to cool the combustion in an effort to allow the consumer to run regular gas is RIDICULOUS. The consumer ends up dealing with fuel in the oil as the result.



What is the evidence to back this theory of using higher octane will offset the need for fuel dilution. There are plenty of examples of were consumers will buy an engine were higher octane is recommended. Chrysler HEMI is a example.


Subaru requires (not just “recommends”) premium in their 2.5 Turbo (of my 2007 vintage anyway). I have done only 2 UOA’s on it, and all looks good...much better than anyone’s Ecoboost UOA (that I’ve seen). Is it the design? The premium fuel? The Euro Castrol? The slightly shorter OCI? Is it using Blackstone instead of OA?

Of course, that isn’t your “evidence.”

Is there an Ecoboost3.5 UOA from someone who has consistently used premium fuel?


15 Ford Transit 250 3.5EB Turbo PPPUP 5w30
07 Subaru OBXT 2.5 Turbo Castrol Euro 0w30
Re: 2015 3.5EB Ecoboost Pennzoil Platinum 5w30 [Re: Impatient] #4958818 12/22/18 03:30 PM
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On another page that I’m on a group of people were showing how much they were collecting with their catch cans on a 2.7 Ecoboost. The guys running regular 87 octane we’re having near full catch cans in 5-6k. The guys running 93 octane (stock or tuned) were only getting an ounce or two in their cans in the same timeframe. Not scientific. But something to consider.

With premium fuel I can see less fuel dilution as they don’t have to inject extra fuel to keep from preigniting. I have a 2.7 and we only run 94 octane fuel in it. It just seems happier. On 87 it seems to hesitate and feel laggy. That is gone when it gets higher octane. Plus it gets better fuel economy. Not quite enough to outweigh the cost but it’s worth it to me. Less fuel stops and a better running engine.

Re: 2015 3.5EB Ecoboost Pennzoil Platinum 5w30 [Re: Impatient] #4958849 12/22/18 04:19 PM
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I know it’s not common in US but the country i’m originally from it’s not rare to fill up with gasoline full of lead that is used for knock reduction. Could be the case here as well. Just a guess

Last edited by parshisa; 12/22/18 04:19 PM.
Re: 2015 3.5EB Ecoboost Pennzoil Platinum 5w30 [Re: Impatient] #4958862 12/22/18 04:46 PM
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If you upgrade the motor oil or not Ford will never ask, have they asked you yet?, me either....regardless, the lead issue might be addressed by a full add pkg. Upgrade from the weak D1G2 swill just keep the Ca lower with additional Mg, you get this. I'd be trying a 10/30 0/40 5/40 predicated on cold start temps then do your UOA.

That little motor pushing a big box through the wind and grades at I-system speeds is severe, your UOA just pointed it out, action required. G/L


05 Lexus GX470 175k
640:1 TCW-3
M1 0W40 XG-3614
Toyo Open Country H/T II

06 4Runner SR5 155k
640:1 TCW-3
M1 0W40 XG-3614
Falken Wildpeak AT3W
Re: 2015 3.5EB Ecoboost Pennzoil Platinum 5w30 [Re: dblshock] #4958995 12/22/18 08:15 PM
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Originally Posted by dblshock
...regardless, the lead issue might be addressed by a full add pkg. Upgrade from the weak D1G2 swill just keep the Ca lower with additional Mg, you get this.


Um, No, I don’t fully understand. I know you went on to say try thicker oil, but I didn’t understand how to get a “full add pkg,” or how to keep the Ca lower with additional Mg. Are you suggesting an additive? Or a different brand?


I filled with Ultra this time, which might be a smidge thicker or more resistant to shear, maybe, but I believe it is high Ca, low Mg. Bottle dates back to Oct 2017, no mention of Dexos, unless GM 4718m or GM 6094m is Dexos.

I’m not opposed to mixing in something thicker, but I hate to throw the whole NEW batch of ultra out, or futzing with selling off the 2 remaining 5 qt jugs of Ultra I have. Actually, I’m [censored] at how much futzing has already occurred. After all, my usage and OCI’s at effectively 60% (now with full synthetic no less) borders on “babying” vs “flogging” or “neglecting.”

Last edited by Impatient; 12/22/18 08:16 PM.

15 Ford Transit 250 3.5EB Turbo PPPUP 5w30
07 Subaru OBXT 2.5 Turbo Castrol Euro 0w30
Re: 2015 3.5EB Ecoboost Pennzoil Platinum 5w30 [Re: Impatient] #4959201 12/23/18 01:57 AM
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Originally Posted by Impatient
[]... no mention of Dexos, unless GM 4718m or GM 6094m is Dexos.

No they are not, they are older I guess

Last edited by Impatient; 12/23/18 01:58 AM.

15 Ford Transit 250 3.5EB Turbo PPPUP 5w30
07 Subaru OBXT 2.5 Turbo Castrol Euro 0w30
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