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Old 10-14-2019, 04:10 PM   #1
Subarudunk
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Default 2019 Sti what oil do you use?

I know this topic has been posted over and over, but different oils are discontinued yearly, or the compounds change. So wanted to know what you guys currently use for your Sti?
I am still under warranty and wanted to stick to a 5W30. I was going to to pick up Motul Xclean, but was told that this is better for DIT motors. Any other ideas of something 5W30 that is better than Subaru oil?
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Old 10-14-2019, 04:15 PM   #2
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might want to update your vehicle info
I assume you're referring to the fa20 platform..?

Motul xclean is great oil, use that
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Old 10-14-2019, 04:21 PM   #3
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Sorry info is old. This is for a 2019 Sti. I assumed the xclean was for DIT applications?
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Old 10-14-2019, 05:05 PM   #4
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The same oil that you used in your '04 STI since it's practically the same engine

Sorry.. couldn't help myself.

Any synthetic 5W-30 that meets the warranty "requirements" in the owner's manual is fine (API SN RC or ILSAC GF-5). OCIs are more important than the brand. Most modern synthetics are plenty good for ~5k OCIs.

I honestly get whatever I can find cheapest at Walmart. I often go with Pennzoil PUP or PP because they frequently have rebates. I've gotten a 5 quart jug of Pennzoil PUP for $10-11 after rebate Castrol Edge is usually my next choice.

Motul is a great oil, one of the best.. but also a waste of money for the average driver unless you're doing track time.

It would be great to be able to use a 5W-40, but the owner's manual states otherwise which could lead to a hassle for future warranty claims. The S209 will use Motul's 300V 5W-40.. so maybe Subaru will allow us to use it on the STI since it's the same engine?
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Old 10-14-2019, 06:31 PM   #5
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Oil is oil. There is not such thing as better for DIT oil. If you cared about this topic, which you don't, you'd have installed an oil bypass setup and you'd be doing used oil analysis. Admit you don't care and move on with your life as it will be easier. I have used Walmart Supertech which is $17/5qts and whatever oil filter is on sale and I have 300,000 miles on my 04 WRX. I don't care about oil, I care about changing it regularly (5000 miles only because its easy to remember that way) and not driving like an asshat. Those are the keys to long car life.
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Old 10-15-2019, 08:26 AM   #6
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Default 2019 Sti what oil do you use?

Quote:
Originally Posted by Subarudunk View Post
I know this topic has been posted over and over, but different oils are discontinued yearly, or the compounds change. So wanted to know what you guys currently use for your Sti?

I am still under warranty and wanted to stick to a 5W30. I was going to to pick up Motul Xclean, but was told that this is better for DIT motors. Any other ideas of something 5W30 that is better than Subaru oil?


Instead of saying “oil is oil” I prefer to say specs are specs. Xclean is a reduced SAPS oil is which is why it’s good for DI as reduced SAPS oils are good at mitigating intake valve deposits. The new Shell Rotella T6 5W-30 MV is another good choice if you’re looking for lower ZDDP oils like the reduced SAPS Xclean. Both of these oils have a high HTHS so they will stay in grade better than GF5 oils and are cat friendly. Don’t push the oil change intervals beyond 4-5k though.

I haven’t seen a voa on it but Castrol Edge ACEA A3 5W-30 might be a good choice. It meets most of the same specs that xW-40’s make with the exception of Porsche A40. This is not the standard GF5 version. It should have a bit more ZDDP than Xclean or Rotella MV.

Yeah, running any GF5 oil is pretty much the same. An exception may be Ravenol but there’s not much data on it. Probably the best specs on paper of all GF5 oils.

Keep in mind the temp chart in your manual shows 5W-40 and mentions that thicker viscosity is required in high temps.
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Old 10-15-2019, 08:33 AM   #7
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Quote:
Originally Posted by Subarudunk View Post
So wanted to know what you guys currently use for your Sti?
well I typically use pennzoil platinum synthetic, 5w-30 in winter and 10w30 in summer.
So now that's two of us in this thread using pennzoil.

How are you going to come to your final decision?
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Old 10-15-2019, 09:54 AM   #8
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I like pennzoil platinum. Some don't.
I don't like GTX castrol (synthetic). Some do.
It's any wonder this topic has become absolutely ridiculous...
But we can all agree on one thing. Change it every 3-5k miles and don't drive like an asshat - as per unabomber.
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Old 10-15-2019, 11:32 AM   #9
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Quote:
Originally Posted by bluesubie View Post
Keep in mind the temp chart in your manual shows 5W-40 and mentions that thicker viscosity is required in high temps.
This isn't the case in the newer owner's manuals. I've only found the comment:

Quote:
*If 5W-30 synthetic oil is not available, 5W-40 conventional oil may be used if replenishment is needed but should be changed to 5W-30 synthetic oil at the next oil change.
Then it has a temperature diagram with 5W-30 & 5W-40 overlapping the same temperature range with 5W-30 being the preferred oil.
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Old 10-15-2019, 02:07 PM   #10
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Quote:
Originally Posted by WRXnick16 View Post
This isn't the case in the newer owner's manuals.

It’s still there. Check 11-15:

https://cdn.subarunet.com/stis/doc/o...1905A_STIS.pdf
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Old 10-15-2019, 03:18 PM   #11
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Quote:
Originally Posted by bluesubie View Post
Thanks. They really like to be vague and hide things.

Quote:
Changing the oil and oil filter
Change the oil and oil filter according to the maintenance schedule in the “Warranty and Maintenance Booklet”.

The engine oil and oil filter must be changed more frequently than listed in the maintenance schedule when driving on dusty roads, when short trips are frequently made, or when driving in extremely cold weather.

Recommended grade and viscosity
CAUTION
Use only engine oil with the recommended grade and viscosity.
Refer to “Engine oil” F 12-4.

NOTE
Engine oil viscosity (thickness) affects fuel economy. Oils of lower viscosity provide better fuel economy. However, in hot weather, oil of higher viscosity is required.

Synthetic oil
You must follow the oil and filter changing intervals shown in the Warranty and Maintenance booklet.

NOTE
Synthetic oil of the grade and viscosity noted in chapter 12 is the recommended engine oil for optimum engine performance. Conventional oil may be used if synthetic oil is unavailable.
Quote:
Engine Oil

Approved engine oil

Always use the SUBARU approved engine oil. For further details, please contact your SUBARU dealer. If the approved engine oil is unavailable, use the alternative engine oil described on the next page.

Alternative engine oil
If the SUBARU approved oil is unavailable, the following alternative oil can be used.

NOTE
  • Each quantity indicated here is only a guideline. The necessary quantity for replacement may differ slightly depending on the temperature and other factors.
  • In choosing an oil, you want the proper quality and viscosity, as well as one that will enhance fuel economy. Oils of lower viscosity provide better fuel economy. However, in hot weather, oil of higher viscosity is required to properly lubricate the engine. The following table lists the recommended viscosities and applicable temperatures.
  • When adding oil, you may use different brands together as long as they are the same API classification and SAE viscosity as those recommended by SUBARU.
Oil grade

API (American Petroleum Institute) classification SN with the words “RESOURCE CONSERVING”

OR

ILSAC (International Lubricant Specification Advisory Committee) GF-5, which can be identified with the ILSAC certification mark (Starburst mark)

SAE viscosity No. and applicable temperature

5W-30 synthetic oil is the required oil for optimum engine performance and protection. Conventional oil may be used if synthetic oil is unavailable.

*: If 5W-30 synthetic oil is not available, 5W-40 conventional oil may be used if replenishment is needed but should be changed to 5W-30 synthetic oil at the next oil change.
Definitely open for interpretation..
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Old 10-15-2019, 03:20 PM   #12
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Old 10-15-2019, 03:30 PM   #13
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Default 2019 Sti what oil do you use?

Quote:
Originally Posted by WRXnick16 View Post
Thanks. They really like to be vague and hide things.



Definitely open for interpretation..

Try getting SoA to tell you what a good “5W-40 conventional” is since that is supposedly allowed for replenishment. It’s all about those CAFE Credits!
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Old 10-15-2019, 05:52 PM   #14
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Use either AMSOIL or Pennzoil

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Old 10-15-2019, 08:02 PM   #15
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Quote:
Originally Posted by ericsson View Post
Use either AMSOIL or Pennzoil

https://youtu.be/TWuKvnCq1js
I like this guy. I do. His "testing" of oil is 100% terrible though.
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Old 10-15-2019, 10:17 PM   #16
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Imabethatguy. Redline 5w-30.
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Old 10-15-2019, 10:21 PM   #17
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Quote:
Originally Posted by Unabomber View Post
I like this guy. I do. His "testing" of oil is 100% terrible though.
What did he do wrong and what would have been a better test?
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Old 10-15-2019, 11:44 PM   #18
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Motul X Clean 5w-40(LDS premium fill). Stock 2019 STI, Florida. Car runs fine, no oil loss.
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Old 10-16-2019, 07:40 AM   #19
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Quote:
Originally Posted by Unabomber View Post
I like this guy. I do. His "testing" of oil is 100% terrible though.
I’m pretty sure Ford used similar “test” equipment when choosing an oil for the Model T. At least your SuperTech is API certified while Amsoil SS is not.

Quote:
Originally Posted by Scorpius View Post
Imabethatguy. Redline 5w-30.
Another oil with no certification. Great oil though. Unless you’re referring to the new API certified version?

Amsoil and Red Line both carry 4 different 5W-30’s.
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Old 10-16-2019, 07:51 AM   #20
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Default 2019 Sti what oil do you use?

Quote:
Originally Posted by Maine Jim View Post
What did he do wrong and what would have been a better test?

Noack volatility, HTHS, Sequence IIIG, Sequence IVA, for starters.

http://ballots.api.org/marketing/bal...09-Annex-Q.pdf

Then he can do an updated video with the new GF6 tests.

https://www.infineuminsight.com/reso...-engine-tests/

And if he really wants to raise the bar, ACEA FTW!

https://www.acea.be/uploads/news_doc...ences_2016.pdf

Don’t fall for shady oil testing.

Quote:
However, both Head and Shoulders shampoo and GL-5 rated gear oils will outperform motor oils in this “test,” so does that mean you should use Head and Shoulders shampoo as your motor oil?

Last edited by bluesubie; 10-16-2019 at 08:04 AM.
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Old 10-16-2019, 08:14 AM   #21
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^he had two coffee pots dude
AND he switched them back and forth a bunch of times

You call that shady?

Honestly, the only thing that would take it to the next level would be to add in the slickness test.
Procedure: Dip fingers in oil, rub together, rate slipperiness on a scale of 1 to 10, 1 being least slippery and 10 being most slippery.
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Old 10-16-2019, 11:00 AM   #22
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Quote:
Originally Posted by bluesubie View Post
Noack volatility, HTHS, Sequence IIIG, Sequence IVA, for starters.

http://ballots.api.org/marketing/bal...09-Annex-Q.pdf

Then he can do an updated video with the new GF6 tests.

https://www.infineuminsight.com/reso...-engine-tests/

And if he really wants to raise the bar, ACEA FTW!

https://www.acea.be/uploads/news_doc...ences_2016.pdf

Don’t fall for shady oil testing.
Wow!
Thanks for the info.
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Old 10-17-2019, 01:59 AM   #23
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OP, I have a ully stock 2018 Sti still under warranty also had the same questions and a thread like yours. I got recommended these oils to summarize my thread.

Motul X clean EFE 5w30 ( premium fill at dealership)
Red line 5w30
Shell T6 Multi Vehicle 5w30
Pennzoil Ultra Platinum 5w30
Castrol Edge 0w40
Motul Xcess 5w40

I ended up with Pennzoil Ultra platinum just because I can get it from walmart whenever I can and its always on sale. Also, if I have a chouse of doing the Motul 5w30 Xclean EFE from the dealer If I really wanted to. to sum it all up, its all about changing your oil regularly just like Unabomber said. 3k miles for me. I know a lot of people where I am at (SAN DIEGO) right when they get their STi.. they change it to Motul 5w40 Xcess FULLY STOCK and have accessports already. nobody even gives a **** about that warranty because they want to protect the bearings and accessport because to be able to see knocks since our gas IS ACN91..
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Old 10-17-2019, 02:04 AM   #24
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Quote:
Originally Posted by bluesubie View Post
I’m pretty sure Ford used similar “test” equipment when choosing an oil for the Model T. At least your SuperTech is API certified while Amsoil SS is not.


Another oil with no certification. Great oil though. Unless you’re referring to the new API certified version?

Amsoil and Red Line both carry 4 different 5W-30’s.

I think the new API certified version 5w30 is the blue bottle?? how good are these now compared to the old one? I was using Amsoil SS 5w30 but yea HTHS is like 3.3.. but running Pennzoil Ultra Platinum 5w30 now since its readily available ALOT cheaper and its about the same HTHS 3.3. This is on my Sti..
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Old 10-17-2019, 08:00 AM   #25
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Quote:
Originally Posted by SDblitz858 View Post
I think the new API certified version 5w30 is the blue bottle?? how good are these now compared to the old one? I was using Amsoil SS 5w30 but yea HTHS is like 3.3.. but running Pennzoil Ultra Platinum 5w30 now since its readily available ALOT cheaper and its about the same HTHS 3.3. This is on my Sti..


Yes, blue label black bottle.

https://www.redlineoil.com/professio...ries-motor-oil

Haven’t seen a VOA on it, but would expect it to perform like any other GF5 oil and shear to a 20 grade. On the plus side it does use Group III and IV base stocks. The Euro version should perform similar to Motul X-clean.
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