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Synthetic Oil for Direct injection #4752124
05/09/18 02:43 PM
05/09/18 02:43 PM
Joined: May 2017
Posts: 31
New York/USA
Joeescape63 Offline OP
Joeescape63  Offline OP
Joined: May 2017
Posts: 31
New York/USA
My new 2018 Subaru Forester has the 2.5L N/A engine.My question is can a synthetic motor oil like Valvoline Advanced Synthetic really make a difference in a direct injection engine with or without a turbo buy cutting down on the deposits or is it marketing hype?Thanks Joe


2018 Subaru Forester Touring
2.5L engine/CVT
Subaru Filters/Castrol Edge 0W20
Re: Synthetic Oil for Direct injection [Re: Joeescape63] #4752142
05/09/18 03:03 PM
05/09/18 03:03 PM
Joined: Sep 2008
Posts: 2,018
Pennsylvania
Boomer Offline
Boomer  Offline
Joined: Sep 2008
Posts: 2,018
Pennsylvania
I don't know about deposits but DI gas engines like I have in my VW All Track suffer from fuel dilution of the oil. The more robust syn oils may maintain adequate lubrication longer (so the story goes) than non-synthetics. I use the recommended synthetic Castrol in my VW and I change it every 5000 miles.


2013 VW Passat TDI SE, 61,200 miles Castrol Professional VW507 5W-30
2017 VW Golf All Track 18,370 miles Castrol Professional VW505 5W-40
Re: Synthetic Oil for Direct injection [Re: Joeescape63] #4752183
05/09/18 04:00 PM
05/09/18 04:00 PM
Joined: Aug 2002
Posts: 14,631
Silicon Valley
PandaBear Offline
PandaBear  Offline
Joined: Aug 2002
Posts: 14,631
Silicon Valley
I remember one article I read, that a Korean research shows that Group 4 based stock oil has a lower tendency of valve deposit if changed more frequently.

My guess is it has to do with ash and Noack.


"You keep asking questions PandaBear and you'll end up a vegetarian like my wife" - Camu Mahubah
Re: Synthetic Oil for Direct injection [Re: Joeescape63] #4752194
05/09/18 04:18 PM
05/09/18 04:18 PM
Joined: Mar 2008
Posts: 7,526
USA
slacktide_bitog Offline
slacktide_bitog  Offline
Joined: Mar 2008
Posts: 7,526
USA
The difference is most significant with TGDI turbo DI engines, but even non-turbo GDI benefits from it, too smile

Re: Synthetic Oil for Direct injection [Re: Joeescape63] #4752199
05/09/18 04:20 PM
05/09/18 04:20 PM
Joined: Oct 2009
Posts: 3,694
Wet side WA
JohnnyJohnson Offline
JohnnyJohnson  Offline
Joined: Oct 2009
Posts: 3,694
Wet side WA
The real issue is for the manufacturers to fix their direct injection problem rather than just dumping it on their customers like they have done.


2004 Corolla 128276
Out: VML 5w-30 TG4967 OCI 5007 Miles
In: EDGE EP 5W-30 Bosch 3311 122537 7-18-18
2006 Duramax 74615
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 73705 4-22-18
Re: Synthetic Oil for Direct injection [Re: Joeescape63] #4752211
05/09/18 04:34 PM
05/09/18 04:34 PM
Joined: May 2015
Posts: 177
Virginia
GravelRoad Offline
GravelRoad  Offline
Joined: May 2015
Posts: 177
Virginia
When did the FB25 get direct injection ???


2016 Subaru Outback Premium 2.5. PP 5w30 oem filter
2018 Hyundai Kona 1.6T. Lifetime dealer free oil/filter change
Re: Synthetic Oil for Direct injection [Re: Joeescape63] #4752237
05/09/18 04:56 PM
05/09/18 04:56 PM
Joined: Sep 2009
Posts: 16
San Diego
trooplewis Offline
trooplewis  Offline
Joined: Sep 2009
Posts: 16
San Diego
I've been wondering about this questions as well, since I have a 2017 Sonata 2.4L that is DI.

Maybe it's not a valid assumption, but I would think that a synthetic would not fry itself onto the valve stems like dino oil would. Sort of the same reasoning that affected the Mini Cooper turbos; if you used dino oil, it coked up the bearings in the turbocharger that were fed with sump oil.

Re: Synthetic Oil for Direct injection [Re: Joeescape63] #4752256
05/09/18 05:19 PM
05/09/18 05:19 PM
Joined: Apr 2018
Posts: 646
Somewhere in time
Imp4 Offline
Imp4  Offline
Joined: Apr 2018
Posts: 646
Somewhere in time
Originally Posted By: Joeescape63
My question is can a synthetic motor oil like Valvoline Advanced Synthetic really make a difference in a direct injection engine with or without a turbo buy cutting down on the deposits or is it marketing hype?

Cutting down on deposits??? To be determined..... But definitely yes if you believe the marketing hype.

W.R.T. LSPI, this is why API SN+ and dexos1 gen2 were created. Yes they both definitely help to prevent LSPI.


2001 Mitsubishi Galant 2.4 - 160k+
Grandma's creampuff...
Re: Synthetic Oil for Direct injection [Re: Joeescape63] #4752267
05/09/18 05:29 PM
05/09/18 05:29 PM
Joined: Nov 2016
Posts: 567
sonoma
burla Offline
burla  Offline
Joined: Nov 2016
Posts: 567
sonoma
LSPI is for real, you should really think about using spun micro glass filters and those formulas that were created with gf-6 in mind. Low calcium and higher magnesium formulas like m1 or amsoil. M1 was ahead of the field on the issue, and I'm sure there are many other options.

Re: Synthetic Oil for Direct injection [Re: Joeescape63] #4752273
05/09/18 05:36 PM
05/09/18 05:36 PM
Joined: Nov 2016
Posts: 567
sonoma
burla Offline
burla  Offline
Joined: Nov 2016
Posts: 567
sonoma
read the part that says lubrication and lspi, look at how low calcium affects lspi.

LSPI is near non existent with low calcium oil. m1 costco deal is a great option, but Amsoil also has high moly which is an additional benefit, read the page and identify where they take about moly. M1 also has moly, just less then Amsoil. Two great choices for di turbo's.

Gf-6 is not here yet, but Amsoil and m1 both lowered their calcium for folks just like you that have a di turbo. You are smart for inquiring about it, now make sure you just don't go buying some junk off the walmart shelf that says synthetic and think you did something good for your baby. It has to be a low calcium oil, if you don't want either of the two I suggested, then do your own research and find another low calcium option.

The most important thing you want to use is a low calcium oil. Only 1 lspi event for every 25 that happens with higher calcium.


Last edited by burla; 05/09/18 05:43 PM.
Re: Synthetic Oil for Direct injection [Re: Joeescape63] #4752290
05/09/18 05:49 PM
05/09/18 05:49 PM
Joined: Nov 2016
Posts: 567
sonoma
burla Offline
burla  Offline
Joined: Nov 2016
Posts: 567
sonoma
Spun Micro Glass filters are Fram Ultra 9 bucks at Walmart, Amsoil EA, Royal Purple, and Wix XP are among the most popular. I just don't trust paper past 3 mos and with these filters there is literally nothing to worry about for years. They aren't gonna get stiff and blow a hole, I've cut my filters open for years, Royal purple filters are still soft and pliable after 2 years in use.

Re: Synthetic Oil for Direct injection [Re: burla] #4752312
05/09/18 06:13 PM
05/09/18 06:13 PM
Joined: Mar 2017
Posts: 7,001
...
PimTac Offline
PimTac  Offline
Joined: Mar 2017
Posts: 7,001
...
Originally Posted By: burla
LSPI is for real, you should really think about using spun micro glass filters and those formulas that were created with gf-6 in mind. Low calcium and higher magnesium formulas like m1 or amsoil. M1 was ahead of the field on the issue, and I'm sure there are many other options.




How does a spun glass filter reduce LSPI?


Cannot see signatures any longer so it doesn’t matter.
Re: Synthetic Oil for Direct injection [Re: Joeescape63] #4752335
05/09/18 06:32 PM
05/09/18 06:32 PM
Joined: Apr 2018
Posts: 619
Canada
nap Offline
nap  Offline
Joined: Apr 2018
Posts: 619
Canada
Problem with these “LSPI events” is that they tend to be catastrophic. Just one is enough. “Reducing” isn’t enough, I want to read “eliminate” instead.

Re: Synthetic Oil for Direct injection [Re: Joeescape63] #4752355
05/09/18 07:01 PM
05/09/18 07:01 PM
Joined: Aug 2004
Posts: 2,067
5600 feet elevation, Arizona
double vanos Offline
double vanos  Offline
Joined: Aug 2004
Posts: 2,067
5600 feet elevation, Arizona
Wow. I just run Castrol 0w40 in my ‘11 F150 EB and haven’t given it another thought. I’m at 115k miles and the only thing unusual I do for the truck is run premium. Is it too late for me to start worrying about this.....?


Sabine Schmitz is the Queen of the 'Ring; Svetlana Kapanina is the Queen of the SKIES...
Re: Synthetic Oil for Direct injection [Re: Joeescape63] #4752358
05/09/18 07:02 PM
05/09/18 07:02 PM
Joined: Nov 2016
Posts: 567
sonoma
burla Offline
burla  Offline
Joined: Nov 2016
Posts: 567
sonoma
There is a way to eliminate them for sure, don't buy a di turbo.

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