Recent Topics
Pennzoil Platinum at Walmart
by TheLawnRanger
Yesterday at 11:21 PM
Mopar OEM and Fram Ultra Oil filters, '18 Jeep JL
by IndyFan
Yesterday at 10:45 PM
Whatís the odds..
by Eric Smith
Yesterday at 09:51 PM
Who can relate?
by Reddy45
Yesterday at 09:43 PM
No more oil changes
by goodtimes
Yesterday at 09:19 PM
Separating toddlers from their parents?
by fdcg27
Yesterday at 08:50 PM
gm 8.6 truetrac
by Spitter
Yesterday at 08:45 PM
New addition to my garage: 2000 Corvette FRC
by MrHorspwer
Yesterday at 08:34 PM
Rockauto 5% off
by Spitter
Yesterday at 08:32 PM
fumoto oil valve
by Santo
Yesterday at 08:19 PM
Grand solar minimum...
by ridgerunner
Yesterday at 07:57 PM
Pentofrost coolant $10 Autozone
by PD001
Yesterday at 07:49 PM
The things you find cleaning Garage 30+ btls slob
by digger327
Yesterday at 07:20 PM
Castrol GTX Magantec 0w20 - 6 pack $21.99 - Amazon
by 04SE
Yesterday at 07:07 PM
Havoline Pro DS 5w20 $3.15/quart - Amazon
by 04SE
Yesterday at 07:06 PM
Needing New Dipstick
by Geauxtiger
Yesterday at 05:11 PM
'98 Mercedes E300TD Rotella T5 10W-30 5k miles
by KenO
Yesterday at 04:35 PM
Premium guard oil filters
by Jaha24k
Yesterday at 04:09 PM
76 super motor oil- synthetic blend 5w-30
by Jaha24k
Yesterday at 04:07 PM
Who makes the Mopar 5038041AA filter?
by Quattro Pete
Yesterday at 03:55 PM
Newest Members
Shassis, Santo, aligoodn, memyself, MichiganKid419
65274 Registered Users
Who's Online
14 registered (Char Baby, car51, ArrestMeRedZ, CleverUserName, boom10ful, fordmanwv), 755 Guests and 43 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
65274 Members
67 Forums
285629 Topics
4766666 Posts

Max Online: 3590 @ 01/24/17 08:07 PM
Donate to BITOG
Topic Options
#4780118 - 06/07/18 01:01 PM Looking for Oil/OCI Recommendation FA20DIT
redbeardmcgee Offline


Registered: 03/22/10
Posts: 2
Loc: SF Bay Area, California
Hello,

Long time lurker, first time poster. We just bought a slightly used 2018 Subaru Forester XT Touring that has the FA20DIT engine. Bought it at 7k miles from a dealer who used it as a loaner car. They did the first oil change around 6k miles per maintenance schedule. We just got back from a 2500 mile road trip from out home in Oakland, CA to various locations in Orgeon and back. Now, at almost 10k miles I would like to do an oil change and use a proper oil brand and grade better suited to the engine and service conditions than the Subaru oil.

The trip included what I would consider severe conditions such as almost daily spirited driving on paved backroads as well as over 150 miles on dirt and gravel forest service roads and even 15 miles on the beach. We plan to keep this car for at least 10 years and this will be the normal use for this car. I have the Cobb Access Port coming in the mail and will be flashing over to their 91 octane stage 1 map with plans to get a downpipe/j-pipe and go stage 2 by the end of the year. For next year I am also considering other mods to the engine such as TGV/EGR deletes, upgraded intake and turbo inlet hose, charge pipe, larger top-mount-intercooler, electronic boost control solenoid, and probably other things the shop might recommend. All of these other things would need to be accompanied with a custom "pro" tune. I am also going to do other suspension and chassis mods including slightly-larger-diameter and slightly-heavier all terrain tires, but I don't know if those will affect oil choice or OCI.

After that long preamble, what oil should I use and how often should I change it? I would prefer to stick with readily available walmart oils for convenience and to save money, but I would consider the better oils like RP, Reline, Amsoil, etc if you guys think they will actually make the engine last longer. From what I read about oil filters, only the Subaru ones are recommended for these cars because of the high bypass spec that is difficult or impossible to find in the aftermarket.

Also, do you guys have any recommendations on the CVT and rear end oils?

Thank you,

Top
#4780154 - 06/07/18 01:34 PM Re: Looking for Oil/OCI Recommendation FA20DIT [Re: redbeardmcgee]
SilverFusion2010 Offline


Registered: 06/29/11
Posts: 1657
Loc: Crawfordville FL
For now a 10w-30, I like M1 HM 10w-30 because itís AECA a3/b3 and has a high HTHS of 3.5 compared to most GF-5 10w-30 which are 3-3.1

Once you start with the modding a 15w-40 HDEO or one of the Porsche A40 certified 0w-40
5k oci


Edited by SilverFusion2010 (06/07/18 01:38 PM)
_________________________
2010 Ford Fusion SE 3.0L V6, 178k miles M1 HM 10w-30

Top
#4780173 - 06/07/18 01:55 PM Re: Looking for Oil/OCI Recommendation FA20DIT [Re: SilverFusion2010]
bluesubie Offline


Registered: 08/04/03
Posts: 2279
Loc: NJ
Originally Posted By: SilverFusion2010
For now a 10w-30, I like M1 HM 10w-30 because itís AECA a3/b3 and has a high HTHS of 3.5 compared to most GF-5 10w-30 which are 3-3.1

Once you start with the modding a 15w-40 HDEO or one of the Porsche A40 certified 0w-40
5k oci

approved

At the end of my current run on Castrol 0W-40, I'm going with a blend of Castrol Edge 10W-30/10W-40 High Mileage. Running these robust oils you should be fine going with a 5-6k mile OCI. I'm running a Cobb Stage I OTS as well.

I chose Castrol 0W-40 because the ZDDP is lower than Mobil 1 and I thought that maybe it would help with my constant catalytic converter CEL. But when I added a quart of Edge 10W-30 HM for make-up oil I noticed that my consumption subsided and my consumption hasn't subsided for the past 110,000+ miles.

I usually recommend Castrol 0W-40 over Mobil 1 for modified DIT's due to the lower calcium in Castrol since calcium is thought to contribute to LSPI and lower ZDDP is thought to be better at mitigating intake valve deposits. Subaru Japan has Castrol SLX Professional 5W-40 for all turbos and I think it's actually higher in SAPS than Castrol 0W-40 (although I haven't looked into this in a while). I've run Mobil 1 High Mileage 10W-30 in the past but switched because it didn't help with my consumption.

I have no experience with CVT oil but see a lot of recommendations to stick with OEM. Run any GL-5 in the rear diff.

Oh, cars with EGR/TGV deletes have shown much less fuel diltion and supposedly that helps with intake valve deposits as well. There's a lot of DIT uoa's on nasioc in the ongoing 2015+ WRX uoa thread.


Edited by bluesubie (06/07/18 02:00 PM)
_________________________
'04 Subaru Forester 2.5XT
Castrol Edge 0W-40

Top
#4780179 - 06/07/18 01:58 PM Re: Looking for Oil/OCI Recommendation FA20DIT [Re: redbeardmcgee]
slacktide_bitog Offline


Registered: 03/20/08
Posts: 6145
Loc: USA
welcome

Rotella T6 5w30 or 5w40 or Chevron Delo 400LE 5w30 for 5k for now. You may wish to consider getting a UOA done after your first oil change after installing the mods. Napa has an oil analysis kit for about $15. Part number 4077.

Wix makes oil filters with the correct Subaru bypass. Napa's house brand filters are made by Wix. Napa Gold is the same as Wix, and Napa Platinum is the Wix XP wire-backed synthetic filter.

Castrol makes a great CVT fluid at a good price. It is often on sale for $5/qt (I think AAP/Carquest has it on sale now, actually). And if you ever need some when it's not on sale, Amazon has a good price on the case of 6.

Top
#4780206 - 06/07/18 02:26 PM Re: Looking for Oil/OCI Recommendation FA20DIT [Re: redbeardmcgee]
john_pifer Offline


Registered: 07/08/12
Posts: 1963
Loc: Nashville, TN via Memphis
I've been running Pennzoil Platinum 10W-30 in mine for the last couple of years, on the recommendation of members here.

No consumption, no issues. I posted a UOA on it.
_________________________
16 WRX - PPPP
07 Tacoma V6 - M1 EP 5W-30, Fram Ultra, 10K OCIs, 198K
07 Yamaha R1 - Rotella T6 5W-40, Bosch 3300
07 Yamaha YZ-250, Klotz, Rotella


Top
#4780384 - 06/07/18 05:27 PM Re: Looking for Oil/OCI Recommendation FA20DIT [Re: redbeardmcgee]
Gebo Offline


Registered: 09/18/02
Posts: 2080
Loc: VA
My 2 cents.

Only use Subaru oil filter.

Use Amsoil Gear and CVT oil.

Engine oil choice is up for grabs. I'd ask one of their mechanics what they recommend. Just for kicks...
_________________________
'98 LEX LS400 280K
'00 LEX GS300 195K
'02 4Runner 225K
'05 Lex LS430 85K
'06 Toyota Highlander 145K
'09 Lex IS350 85K


Top
#4780402 - 06/07/18 05:48 PM Re: Looking for Oil/OCI Recommendation FA20DIT [Re: redbeardmcgee]
oil_film_movies Offline


Registered: 06/13/16
Posts: 2553
Loc: MN
Since you're modding the engine, your warranty is off. That does open up some possible oil choices for you. I'd run walmart's Castrol 0w40 or Pennzoil Euro 0w40 in that engine in your case. Very few oils can brag about being Porsche A40 and MB 229.5, very tough specs.

Top
#4780577 - 06/07/18 08:25 PM Re: Looking for Oil/OCI Recommendation FA20DIT [Re: oil_film_movies]
BufordTJustice Offline


Registered: 11/17/16
Posts: 69
Loc: Middle Florida
Originally Posted By: oil_film_movies
Since you're modding the engine, your warranty is off. That does open up some possible oil choices for you. I'd run walmart's Castrol 0w40 or Pennzoil Euro 0w40 in that engine in your case. Very few oils can brag about being Porsche A40 and MB 229.5, very tough specs.


I actually recently had a negative experience running Pennzoil Ultra Euro 0w-40 in my 2011 Outback with EZ36. LOTS of oil consumption in 4.5K miles (It ate 2 full quarts *YIKES*). Haven't had ANY oil do that in this engine before. In fact, running PP 5w-30 and Castrol Edge 0w-40, consumption was so close to nill that You couldn't even tell via the dipstick.

Mayhaps a freak accident...but my '99 Porsche 911 (3.4 H6) didn't like the Penzzoil 0w-40 either. Anecdotal data points....but I won't be going back to it.
_________________________
1999 Porsche 911 Cab 3.4 6-speed -> Mobil Delvac-1 5w-40 ESP (CJ4) -> Fram Ultra XG3675

2011 Subaru Outback 3.6R -> M1 0w-40 FS -> Fram Ultra XG3593A

Top
#4785933 - 06/13/18 02:00 PM Re: Looking for Oil/OCI Recommendation FA20DIT [Re: redbeardmcgee]
redbeardmcgee Offline


Registered: 03/22/10
Posts: 2
Loc: SF Bay Area, California
Thanks for all the advice guys. We plan on keeping this car for at least 10 years maybe 20 and will probably hand it down through the family after that. So what is more important, warranty coverage for a few years or long term engine health with the proper oil for this engine and usage scenarios? Am I expecting too much longevity out of this car with the goal of 250-275 whp? I have always figured that if I am going to modify it eventually, I may as well do it right away so as to enjoy the benefits. Then again, I have never had a car with a warranty before. Should I wait to modify?

I would like to clarify that when the car is driven aggressively it will nearly always be driven loaded down with our roadtrip gear and that the car will be wearing its taller diameter all terrain tires. And we like to seek out high elevation areas which means lots of uphill driving while loaded and with suboptimal gearing. All of which will increase the load the engine sees.

I read through the NASIOC Oil Guide which explained a few things for me, but it doesnt include much about the FA20DIT.

My local walmart didnt have the castrol or penzoil 0w40 so I picked up a quart of M1 15w50 and topped the engine off with about half a quart before heading out of town. We are near San Diego now and I will search for the right oil on the way back home next week.

Top
#4786000 - 06/13/18 03:58 PM Re: Looking for Oil/OCI Recommendation FA20DIT [Re: redbeardmcgee]
Virtus_Probi Offline


Registered: 06/25/15
Posts: 3970
Loc: New England
Subaru introduced software changes to make LSPI less likely after the '14-15 FA20DITs (including mine) were recalled for it, but I'd still be careful about that potentially destructive issue and use a dexos1 Gen 2, dexos2, or SN+ oil. dexos2 opens up higher HTHS choices for modded engines, but good luck finding those oils at Walmart...I ran M1 5W30 ESP, which is now a dexos2 oil and has an HTHS of nearly 3.6, for a while and paid a pretty penny for the privilege ($11/liter at Pep Boys, somewhat cheaper on Amazon in quantity). If M1 10W30 HM is now an SN+ oil, that might be a really good choice for your application.

Subaru makes a special high torque CVT fluid for this engine, if you stick with OEM make sure the dealer actually uses it! I'm pretty sure I got the wrong fluid at 60kmiles and needed to have tranny work done at 80k, luckily under the extended 100kmile warranty Subaru has on all CVTs now...even after that I had to make a return trip to the dealer to get the right fluid put in. Your transmission has a filter added to the design after my '14 was made that might help you avoid these tranny problems.

I bought the special Subaru tool for intake valve cleaning and am glad that I have it, just pop and convenient vacuum hose off and hang the tool with a bottle of Subaru cleaner screwed into it from the hood. I tried using CRC intake valve cleaner spray once and the unfortunate geometry of the intake made that a mess with a MAF sensor cleaning needed to get things running right again afterwards.

Enjoy your ride, it just might be an example of the last of its kind...the XT was dropped for the '19 model year.
_________________________
2014 Forester XT, 80500 miles
Last Change;
Valvoline Full Synthetic 5W30 d1G2
Tokyo Roki 15208AA170 filter

Top
#4786056 - 06/13/18 05:13 PM Re: Looking for Oil/OCI Recommendation FA20DIT [Re: redbeardmcgee]
bluesubie Offline


Registered: 08/04/03
Posts: 2279
Loc: NJ
I probably should have mentioned that the weakest link in CVT 2.0 DITís is the CVT. A lot of people that go beyond Stage I report CVT issues. Have a look at nasic as well as subaruforester.org.
_________________________
'04 Subaru Forester 2.5XT
Castrol Edge 0W-40

Top
#4786092 - 06/13/18 05:56 PM Re: Looking for Oil/OCI Recommendation FA20DIT [Re: bluesubie]
Virtus_Probi Offline


Registered: 06/25/15
Posts: 3970
Loc: New England
Originally Posted By: bluesubie
I probably should have mentioned that the weakest link in CVT 2.0 DITís is the CVT. A lot of people that go beyond Stage I report CVT issues. Have a look at nasic as well as subaruforester.org.

Excellent point, I believe the rule of thumb on subaruforester.org was 300HP max. Guess people were going to the 500HP range with the old 4 speed auto (4EAT??) in the older Foresters and were pretty shocked by the limitations of the CVT.
_________________________
2014 Forester XT, 80500 miles
Last Change;
Valvoline Full Synthetic 5W30 d1G2
Tokyo Roki 15208AA170 filter

Top
#4786568 - 06/14/18 10:06 AM Re: Looking for Oil/OCI Recommendation FA20DIT [Re: Virtus_Probi]
pilot1226 Offline


Registered: 06/26/17
Posts: 23
Loc: NJ
Originally Posted By: Virtus_Probi
Subaru introduced software changes to make LSPI less likely after the '14-15 FA20DITs (including mine) were recalled for it, but I'd still be careful about that potentially destructive issue and use a dexos1 Gen 2, dexos2, or SN+ oil. dexos2 opens up higher HTHS choices for modded engines, but good luck finding those oils at Walmart...I ran M1 5W30 ESP, which is now a dexos2 oil and has an HTHS of nearly 3.6, for a while and paid a pretty penny for the privilege ($11/liter at Pep Boys, somewhat cheaper on Amazon in quantity). If M1 10W30 HM is now an SN+ oil, that might be a really good choice for your application.

Subaru makes a special high torque CVT fluid for this engine, if you stick with OEM make sure the dealer actually uses it! I'm pretty sure I got the wrong fluid at 60kmiles and needed to have tranny work done at 80k, luckily under the extended 100kmile warranty Subaru has on all CVTs now...even after that I had to make a return trip to the dealer to get the right fluid put in. Your transmission has a filter added to the design after my '14 was made that might help you avoid these tranny problems.

I bought the special Subaru tool for intake valve cleaning and am glad that I have it, just pop and convenient vacuum hose off and hang the tool with a bottle of Subaru cleaner screwed into it from the hood. I tried using CRC intake valve cleaner spray once and the unfortunate geometry of the intake made that a mess with a MAF sensor cleaning needed to get things running right again afterwards.

Enjoy your ride, it just might be an example of the last of its kind...the XT was dropped for the '19 model year.


Aren't you supposed to apply the CRC beyond the MAF sensor?
_________________________
Pilot, Subaru Ambassador
http://subaruoutback.org Forums

Top
#4786954 - 06/14/18 07:16 PM Re: Looking for Oil/OCI Recommendation FA20DIT [Re: pilot1226]
Virtus_Probi Offline


Registered: 06/25/15
Posts: 3970
Loc: New England
Originally Posted By: pilot1226
Aren't you supposed to apply the CRC beyond the MAF sensor?

Heck yeah, but IIRC the intake took a right angle bend just past the MAF sensor and I had to kinda press the straw into the side in an attempt to make sure the cleaner was going the right way. I thought it was going OK as I was spraying, but my car ran pretty poorly until I gave the sensor a cleaning so I must have fouled it somehow.
Using the Subaru tool is very easy and has gone without a hitch...I'm sure the CRC spray is great for many, maybe most, applications.
_________________________
2014 Forester XT, 80500 miles
Last Change;
Valvoline Full Synthetic 5W30 d1G2
Tokyo Roki 15208AA170 filter

Top