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Subaru Forester Turbo Oil (EJ205 WRX Engine). #5424786 05/09/20 02:26 PM
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BDK Offline OP
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Hello, first post here but long time lurker,

I recently acquired a JDM Subaru Forester 2008 XT (2.0l Turbo 230PS same engine as the Impreza WRX the EJ205) has about 50000 miles on the clock.

I live in the UK, and I need to service this for the first time, I never owned a turbo car or a Subaru before. It will be just a normal use car no track days and I don't plan to modify it in any way.

I've been reading the forums and the more I read the more confused I get about the engine oil. (Especially when reading the Subaru/WRX/STI/Forester forums).

So from what I've read so far, I'm considering fully synthetic 5w30 or 5w40 or 10w50 or 0w40 or a 50/50 blend of 0w40 & 10w50.

I'm not that bothered about the price, but I'd rather stick to oils easily available in UK rather than import from the US.

Some of the oils I'm considering are below and I can easily get here in the UK, Any advice would be appreciated.

Car manual and engine cap say 5W30.

The cheapest on the list is the first one and has the following specs(copy/pasted below) should I just go with that and be done with it?

Specifications
ACEA C3
API SN / SM
FORD M2C917-A
Approvals
MB-APPROVAL 229.31, 226.5
Porsche A40
Renault RN 0700 / RN 0710
VW 502 00 / VW 505 00 / VW 505 01
Recommendations
API CF
FIAT 9.55535-S2

Fuchs TITAN GT1 XTL 5W-40 Synthetic Engine Oil
https://www.opieoils.co.uk/p-60166-fuchs-titan-gt1-xtl-5w-40-synthetic-engine-oil.aspx
[Linked Image]


Fuchs Titan Race Pro S 5W-40 Ester Fully Synthetic Engine Oil
https://www.opieoils.co.uk/p-68897-...40-ester-fully-synthetic-engine-oil.aspx
[Linked Image]


Millers Oils XF LongLife 5w-50 Fully Synthetic Engine Oil
https://www.opieoils.co.uk/p-60214-...y-synthetic-engine-oil-formerly-xfs.aspx
[Linked Image]


Millers Oils XF LONGLIFE 0w-40 Fully Synthetic Engine Oil
https://www.opieoils.co.uk/p-79244-millers-oils-xf-longlife-0w-40-fully-synthetic-engine-oil.aspx

A blend of the two Millers Oils above 50/50

Castrol Edge SUPERCAR 5w-50 Titanium FST
https://www.opieoils.co.uk/p-195468...anced-full-synthetic-car-engine-oil.aspx
[Linked Image]


Fuchs Titan Race Pro C3 5W-30 or 5W-40 Fully Synthetic Engine Oil
https://www.opieoils.co.uk/p-89826-fuchs-titan-race-pro-c3-5w-30-fully-synthetic-engine-oil.aspx
[Linked Image]


Motul 8100 X-Clean+ 5W-30 or 5W-40 High Performance Full Synthetic Engine Oil
https://www.opieoils.co.uk/p-92073-...rformance-full-synthetic-engine-oil.aspx
[Linked Image]


Millers Oils NANODRIVE CFS 5w-40 NT+ Fully Synthetic Engine Oil
https://www.opieoils.co.uk/p-115238...5w-40-nt-fully-synthetic-engine-oil.aspx
[Linked Image]





Last edited by BDK; 05/09/20 02:50 PM.
Re: Subaru Forester Turbo Oil (EJ205 WRX Engine). [Re: BDK] #5424979 05/09/20 06:49 PM
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You don't have to over think it. Use a quality synthetic 5w30 meeting A3/B4 specs and change it between 8000 and 12000 kilometers. More important on Subaru's is to keep the cooling system in tip top shape and since it's a turbo, don't get on it too hard until it's warmed up and give it a 30 second idle before shutting it off to give the turbo time to spool down and cool off a bit. Maybe a bit longer if you've been hot rod-ing it.

Re: Subaru Forester Turbo Oil (EJ205 WRX Engine). [Re: BDK] #5425113 05/09/20 09:49 PM
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I have a EJ205 and it likes Castrol Edge 0w40.

Re: Subaru Forester Turbo Oil (EJ205 WRX Engine). [Re: Spartanfool] #5425245 05/10/20 06:15 AM
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Originally Posted by Spartanfool
I have a EJ205 and it likes Castrol Edge 0w40.


Did you notice a difference vs 5w30/40 ?

Re: Subaru Forester Turbo Oil (EJ205 WRX Engine). [Re: ripcord] #5425449 05/10/20 10:37 AM
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Originally Posted by ripcord
You don't have to over think it. Use a quality synthetic 5w30 meeting A3/B4 specs and change it between 8000 and 12000 kilometers. More important on Subaru's is to keep the cooling system in tip top shape and since it's a turbo, don't get on it too hard until it's warmed up and give it a 30 second idle before shutting it off to give the turbo time to spool down and cool off a bit. Maybe a bit longer if you've been hot rod-ing it.


Thanks, I'm a complete car noob, do you recommend any upgrades to the cooling system ? I've been looking at the Mishimoto radiators....but honestly have no idea where to start, I plan to keep this car for as long as possible as I really like it and there's no other car I want, so I don't mind investing in it and using quality stuff..

Re: Subaru Forester Turbo Oil (EJ205 WRX Engine). [Re: BDK] #5425647 05/10/20 03:41 PM
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Originally Posted by BDK
Thanks, I'm a complete car noob, do you recommend any upgrades to the cooling system ? I've been looking at the Mishimoto radiators....but honestly have no idea where to start, I plan to keep this car for as long as possible as I really like it and there's no other car I want, so I don't mind investing in it and using quality stuff..

Before I bought a new radiator, I would make sure the hoses and clamps are in good shape. After 12 years, if they're the originals, they're due for replacement. Also, keep an eye on the electric fans for function, though with such low miles they are probably still perfectly fine. With only 50K miles, the coolant might have never been changed, but at 12 years old, I would highly recommend it if you don't know if it has or not.

The most important thing, really, is to just to keep an eye on things. Watch for oil and coolant leaks, especially from the heads. Keep the fluids clean, topped up, etc. Get in the habit of opening the hood and inspecting whenever you fuel up. Get on the forums and learn about the weak points of your particular model so you'll be able to recognize any small problems before they become big ones.

Re: Subaru Forester Turbo Oil (EJ205 WRX Engine). [Re: ripcord] #5425690 05/10/20 05:06 PM
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Originally Posted by ripcord
Originally Posted by BDK
Thanks, I'm a complete car noob, do you recommend any upgrades to the cooling system ? I've been looking at the Mishimoto radiators....but honestly have no idea where to start, I plan to keep this car for as long as possible as I really like it and there's no other car I want, so I don't mind investing in it and using quality stuff..

Before I bought a new radiator, I would make sure the hoses and clamps are in good shape. After 12 years, if they're the originals, they're due for replacement. Also, keep an eye on the electric fans for function, though with such low miles they are probably still perfectly fine. With only 50K miles, the coolant might have never been changed, but at 12 years old, I would highly recommend it if you don't know if it has or not.

The most important thing, really, is to just to keep an eye on things. Watch for oil and coolant leaks, especially from the heads. Keep the fluids clean, topped up, etc. Get in the habit of opening the hood and inspecting whenever you fuel up. Get on the forums and learn about the weak points of your particular model so you'll be able to recognize any small problems before they become big ones.


Thanks a lot! I haven't even thought about the hoses, coolant and the fans....I'm doing the Timing belt kit, water pump included, sparkplugs all the oils and filters. I'll add the coolant and the hoses to the list. I'm not sure if I should change the oil pump also I've heard mixed advice (that they never fail)....

Re: Subaru Forester Turbo Oil (EJ205 WRX Engine). [Re: BDK] #5425842 05/10/20 08:18 PM
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Normally, the only time to change the oil pump is during an overhaul and usually only if it's out of spec. Save your money for your first clutch job smile

Re: Subaru Forester Turbo Oil (EJ205 WRX Engine). [Re: BDK] #5425848 05/10/20 08:23 PM
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Originally Posted by BDK
Originally Posted by Spartanfool
I have a EJ205 and it likes Castrol Edge 0w40.


Did you notice a difference vs 5w30/40 ?


The 0w helps in Michigan's cold winters, and the 40 runs quieter than the 30 weight (in my opinion). I often ran German Castrol 0w30 until I tried the 40 weight.

Re: Subaru Forester Turbo Oil (EJ205 WRX Engine). [Re: BDK] #5425912 05/10/20 10:17 PM
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I was running Pennzoil Ultra Platinum 5W-30 in my 04 WRX, I am not sure if that available in your location. If not, I am sure the regular PP 5W-30 is a good choice as well, the main thing you want to aware of it 'oil shearing' with the EJ engines. I have heard of it taking xW-30 oils and breaking them down to xW-20 oils in no time. Although I havent ran across many UOA proving this idea, its a common thought in the Subaru community and something I bought into.


2003 Infiniti G35 6MT 105k
2005 Honda Accord 237k
2010 Hyundai Santa Fe 112k
Re: Subaru Forester Turbo Oil (EJ205 WRX Engine). [Re: BDK] #5426033 05/11/20 06:18 AM
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Are ester based oils the best oils out there ? Are they the most shear resistant?

Here in the UK the Fuchs Titan Race Pro (Silkolene) is recommended by a lot of people for turbo/sports cars.

The Race Pro S 5w40 I linked above has: -Noack - 6,6%; -HTHS - 4,2...and I'm leaning towards that or the 5W30 of the same..

Re: Subaru Forester Turbo Oil (EJ205 WRX Engine). [Re: BDK] #5426086 05/11/20 07:40 AM
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bluesubie Online Content
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welcome

I would pass on a C3 oil and go with a A3/B4 xW-30 or xW-40 oil changed at 5,000 miles max. There's no need for a 50 grade or a reduced SAPS oil. I would also drop Opie Oils an email and see what they recommend. They used to post fairly regularly on the UK Subaru Owners Club forum.

Nice car! drive

cheers


'20 Subaru Outback Onyx XT | Idemitsu Zepro 0W-20
'04 Subaru Forester 2.5XT | Castrol Edge 0W-40
Re: Subaru Forester Turbo Oil (EJ205 WRX Engine). [Re: bluesubie] #5426099 05/11/20 07:59 AM
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Originally Posted by bluesubie
welcome

I would pass on a C3 oil and go with a A3/B4 xW-30 or xW-40 oil changed at 5,000 miles max. There's no need for a 50 grade or a reduced SAPS oil. I would also drop Opie Oils an email and see what they recommend. They used to post fairly regularly on the UK Subaru Owners Club forum.

Nice car! drive

cheers


Thanks, I did, and they recommended me the Fuchs Race Pro S 5w40. So I'm leaning towards that or the Castrol Edge 0w40...

Re: Subaru Forester Turbo Oil (EJ205 WRX Engine). [Re: BDK] #5426175 05/11/20 09:13 AM
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These engines have a tendency to consume a lot of oil so they like the thicker 5w40 oils. My son has a 2002 WRX and he has much lower consumption since he switched to Shell Rotella T6 5w40. It has a viscosity of 14.9 cst at 100c, so I would shoot for an oil that is close to this viscosity. Castrol Edge 0w40 is thinner than this, it's only 13.2 cst at 100c and thins out more easily than a 5w40 would.


2018 Corvette, 22k, M1 ESP Formula 5w30 & NAPA Gold
2006 Civic EX Coupe, 156k, PUP 5w20 & Fram Ultra
2010 BMW 328i X-Drive,130k, GC 0w40 & Fram Ultra

Re: Subaru Forester Turbo Oil (EJ205 WRX Engine). [Re: BDK] #5426221 05/11/20 10:09 AM
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I'd try Redline 5w30.


2020 - Mazda CX-30 - Mobil 1 EP 0w20
2019 - Subaru Impreza - Dealer Oil
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