('14+) FA20DIT oil analysis thread - Page 24 - Subaru Forester Owners Forum
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post #346 of 349 (permalink) Old 05-05-2017, 04:49 PM
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Originally Posted by Task514 View Post
Not sure where you're getting this from... but from the Subaru Canada website Auti(link) FAQ 20 says: All Subaru vehicles come from the factory with natural petroleum-based engine oil.
Factory fill may be "natural petroleum-based engine oil" but the required oil for subsequent oil changes is synthetic. Virtually all synthetic brands use a "natural petroleum-based engine oil" as a base stock which is then modified. So technically the website could be correct- factory fill could be both "natural petroleum based" and synthetic. I believe the only exception is Penzoil's natural gas synthesised synthetics. Here is a link from NAPA:

How Synthetic Oil Is Made

Check your Owners/Service manuals for oil requirements which generally are sourced from Engineers versus OEM Regional Websites which may contain Marketing Department "male bovine fecal matter"

I went down a similar rabbit hole trying to figure out if US based brake assist systems rapidly strobe the third brake light when a panic stop was detected. I saw this blurb on a Subaru Global Website summarizing safety features. In the US they don't according to Subaru (something about strobing brake lights being a "no no" in many States)

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post #347 of 349 (permalink) Old 05-05-2017, 09:04 PM
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Originally Posted by JumpingJackFlash View Post
Factory fill may be "natural petroleum-based engine oil" but the required oil for subsequent oil changes is synthetic. Virtually all synthetic brands use a "natural petroleum-based engine oil" as a base stock which is then modified. So technically the website could be correct- factory fill could be both "natural petroleum based" and synthetic. I believe the only exception is Penzoil's natural gas synthesised synthetics. Here is a link from NAPA:

How Synthetic Oil Is Made

Check your Owners/Service manuals for oil requirements which generally are sourced from Engineers versus OEM Regional Websites which may contain Marketing Department "male bovine fecal matter"

I went down a similar rabbit hole trying to figure out if US based brake assist systems rapidly strobe the third brake light when a panic stop was detected. I saw this blurb on a Subaru Global Website summarizing safety features. In the US they don't according to Subaru (something about strobing brake lights being a "no no" in many States)
No, if you read the FAQ, they specifically differentiate the "natural petroleum-based engine oil" as conventional oil and synthetic as synthetic. Now to say Subaru Canada website is lying about all factory fill oil; that's up to you.

Yes the OM specifically says to use synthetic oil... I'm not debating on this. It's just like their suggestion to use premium gas instead of regular gas. I'm not trying to say the OM is a lie or rewriting the OM
I'm just giving my 2c on engine breaking method for engine longevity/performance; using conventional oil for 3-5 post-break oil change before switching permanently to synthetic.
This is just a tip of my personal experience!

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post #348 of 349 (permalink) Old 05-06-2017, 03:48 AM
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Originally Posted by Task514 View Post
No, if you read the FAQ, they specifically differentiate the "natural petroleum-based engine oil" as conventional oil and synthetic as synthetic. Now to say Subaru Canada website is lying about all factory fill oil; that's up to you.

Yes the OM specifically says to use synthetic oil... I'm not debating on this. It's just like their suggestion to use premium gas instead of regular gas. I'm not trying to say the OM is a lie or rewriting the OM
I'm just giving my 2c on engine breaking method for engine longevity/performance; using conventional oil for 3-5 post-break oil change before switching permanently to synthetic.
This is just a tip of my personal experience!
Got it! If you search the threads here and also on the WRX, Crosstrek and NASIOC, forums etc. there are numerous opinions regarding what is in the engine break-in oil and break in recommendations. I couldn't find anything from a cursory review, at least with late model Subarus, documenting from the OEM specifying precisely what is the composition of the break in oil. I was also relating my experience where the website was not applicable to US spec'ed models. Would be curious to see if you asked Subaru Canada what their response would be regarding the break-in oil.

Update: Global website link mentioned above (see "Alert of Danger"):

https://www.subaru-global.com/techno...ivesafety.html

Last edited by JumpingJackFlash; 05-07-2017 at 04:43 AM.
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post #349 of 349 (permalink) Old 05-09-2017, 05:10 AM
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FA20DIT oil analysis thread

Another member here was emailing Idemitsu Lubricants America Corp. Basically the factory fill is similar to the dealer service fill oil, except the factory fill has higher levels of moly and ZDDP.

SoA even says there isn't anything different about the factory fill, but apparently they haven't seen any FF UOA's.
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2004 PSM FXT

Last edited by bluesubie; 05-09-2017 at 05:20 AM.
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  Subaru Forester Owners Forum > Technical Forums and Vehicle Assistance > Engine and Exhaust > FA20DIT - 2.0L Direct-Injection/Turbocharged (2014+)

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