Oil Advice and Recomendations here
#811
Scooby Newbie
Join Date: Jan 2018
Location: Tasmania
Posts: 27

#813

Hi
From memory, the Forester STi doesn't have a plated rear diff (it's not listed on UK oil databases), so I would use a 75w-90 GL5 oil.
http://www.opieoils.co.uk/c-673-75w-...ion-fluid.aspx
The Fuchs Syn 5, Millers CRX, Red Line 75w-90 GL5, Motul Gear 300, Amsoil Severe Gear and Gulf Competition are ideal. The Fuchs Sintopoid, Castrol Syntrax Longlife, Millers TRX, Motul Motylgear, Mobil SHC and Gulf Syngear are also good choices.
Cheers
Tim
From memory, the Forester STi doesn't have a plated rear diff (it's not listed on UK oil databases), so I would use a 75w-90 GL5 oil.
http://www.opieoils.co.uk/c-673-75w-...ion-fluid.aspx
The Fuchs Syn 5, Millers CRX, Red Line 75w-90 GL5, Motul Gear 300, Amsoil Severe Gear and Gulf Competition are ideal. The Fuchs Sintopoid, Castrol Syntrax Longlife, Millers TRX, Motul Motylgear, Mobil SHC and Gulf Syngear are also good choices.
Cheers
Tim
#814

Hi
From memory, the Forester STi doesn't have a plated rear diff (it's not listed on UK oil databases), so I would use a 75w-90 GL5 oil.
http://www.opieoils.co.uk/c-673-75w-...ion-fluid.aspx
The Fuchs Syn 5, Millers CRX, Red Line 75w-90 GL5, Motul Gear 300, Amsoil Severe Gear and Gulf Competition are ideal. The Fuchs Sintopoid, Castrol Syntrax Longlife, Millers TRX, Motul Motylgear, Mobil SHC and Gulf Syngear are also good choices.
Cheers
Tim
From memory, the Forester STi doesn't have a plated rear diff (it's not listed on UK oil databases), so I would use a 75w-90 GL5 oil.
http://www.opieoils.co.uk/c-673-75w-...ion-fluid.aspx
The Fuchs Syn 5, Millers CRX, Red Line 75w-90 GL5, Motul Gear 300, Amsoil Severe Gear and Gulf Competition are ideal. The Fuchs Sintopoid, Castrol Syntrax Longlife, Millers TRX, Motul Motylgear, Mobil SHC and Gulf Syngear are also good choices.
Cheers
Tim
just realised that it takes the same grade!
You wouldnt happen to know how much power steering fluid I would need to do a flush?
Last edited by Rusti; 21 March 2018 at 04:33 PM.
#816

Hi
I would use a 5w-40
http://www.opieoils.co.uk/c-656-5w-40.aspx
Out of those, the best ones are the Fuchs/Silkolene Pro S, Millers CFS/CFS NT+, Motul Sport/300V, Red Line and Gulf Competition. The Motul 8100 X-Cess, Millers XF Longlife, Castrol Edge/Magnatec, Fuchs GT1 XTL/Supersyn, Shell Helix and Mobil Super 3000 are good, cheaper alternatives.
Cheers
Tim
I would use a 5w-40
http://www.opieoils.co.uk/c-656-5w-40.aspx
Out of those, the best ones are the Fuchs/Silkolene Pro S, Millers CFS/CFS NT+, Motul Sport/300V, Red Line and Gulf Competition. The Motul 8100 X-Cess, Millers XF Longlife, Castrol Edge/Magnatec, Fuchs GT1 XTL/Supersyn, Shell Helix and Mobil Super 3000 are good, cheaper alternatives.
Cheers
Tim
#820
Scooby Regular
Join Date: Feb 2014
Location: Scotland
Posts: 440

Hi mr oil man ✋.
I took your previous advice and ran the millers cfs nanodrive 10-50 in my 97 sti, lightly modified. Ran great thanks !
i see you sell the redline high performance oil. Is this any better than the cfs nanodrive for fast road use?
Cost is not an issue - I just want the best performing oil against engine wear .
Also - my car does 2000 miles a year over the summer and then sits in the garage September to April. Am I best leaving the oil changed till the April rather than doing it every six months religiously?
The oil wa last changed end of August last year so prob due a change now but thinking it would be a waste of money for a couple of months of use before it goes away- done 1000 miles since last change
thanks!
I took your previous advice and ran the millers cfs nanodrive 10-50 in my 97 sti, lightly modified. Ran great thanks !
i see you sell the redline high performance oil. Is this any better than the cfs nanodrive for fast road use?
Cost is not an issue - I just want the best performing oil against engine wear .
Also - my car does 2000 miles a year over the summer and then sits in the garage September to April. Am I best leaving the oil changed till the April rather than doing it every six months religiously?
The oil wa last changed end of August last year so prob due a change now but thinking it would be a waste of money for a couple of months of use before it goes away- done 1000 miles since last change
thanks!
Last edited by mellinator2k; 16 June 2018 at 02:33 PM.
#821

Hi
Glad it worked well for you.
Red Line is top stuff too, but I wouldn't say there is any advantage. Both are high performance ester oils, so there isn't a huge difference, except the Millers has the Nanodrive additive.
A lot of people would say to change the oil before the car goes away, but as it is doing so few miles, the oil will be fine for storage, and I'd give it the fresh oil in the new year.
Cheers
Tim
Glad it worked well for you.
Red Line is top stuff too, but I wouldn't say there is any advantage. Both are high performance ester oils, so there isn't a huge difference, except the Millers has the Nanodrive additive.
A lot of people would say to change the oil before the car goes away, but as it is doing so few miles, the oil will be fine for storage, and I'd give it the fresh oil in the new year.
Cheers
Tim
#826
Scooby Newbie
Join Date: Nov 2016
Location: aberdeen
Posts: 9

Hi. I am away to change my oils and was wondering whats best for my car.
2003 53 impreza sti jdm running 350hp.
i already use motul sport for my engine oil but i am unsure about gearbox and diff oil and how much i would need of each.
thanks
2003 53 impreza sti jdm running 350hp.
i already use motul sport for my engine oil but i am unsure about gearbox and diff oil and how much i would need of each.
thanks
#827
Scooby Newbie
Join Date: Sep 2018
Location: Fort st John
Posts: 1

I ran my car out of oil and now it will turn over but not start what would be wrong with it ?
I get asked many questions about oil so I thought a thread here for all oil related questions would be a good idea and build into a FAQ or reference point for others.
So, put your oil questions here but please give the following information if you would like a recommendation:
Make Subaru
Model Forester
Year 2003
Engine size/type 2.5
Any mods no
Type of use (road/track) road
Additional info (max oil temps, current oil used)
What do you want a recommendation for? Engine, Gearbox etc?
I hope this will help and become a useful thread
Regards
Guy
So, put your oil questions here but please give the following information if you would like a recommendation:
Make Subaru
Model Forester
Year 2003
Engine size/type 2.5
Any mods no
Type of use (road/track) road
Additional info (max oil temps, current oil used)
What do you want a recommendation for? Engine, Gearbox etc?
I hope this will help and become a useful thread
Regards
Guy
#828
Scooby Regular
Join Date: Apr 2013
Location: Stevenage
Posts: 35

#829

Sorry for the delay, stopped getting notifications for some reason.
The Motul Gear 300 is ideal for the gearbox.
https://www.opieoils.co.uk/p-899-mot...-diff-oil.aspx
The best option for the diff is a synthetic 75w-90, like the Millers CRX NT LS, Motul Gear 300LS, Red Line 75w-90 GL5 or Gulf Competition LS. A SAE90 or 80w-90 mineral oil such as Motul 90PA, Fuchs Race Gear 90LS or Gulf Gear LS 80w-90 is a good, cheaper alternative.
https://www.opieoils.co.uk/c-970-limited-slip-diff.aspx
Regards
Tim
#830

That's basically it. I can't really offer any advice on that, other than put some oil in once it's fixed.
Cheers
Tim
#832

Hi,
With the DCCD box, I would use the Motul Gear 300.
https://www.opieoils.co.uk/p-899-mot...-diff-oil.aspx
The best option for the diff is a synthetic 75w-90, like the Millers CRX NT LS, Motul Gear 300LS, Red Line 75w-90 GL5 or Gulf Competition LS. A SAE90 or 80w-90 mineral oil such as Motul 90PA, Fuchs Race Gear 90LS or Gulf Gear LS 80w-90 is a good, cheaper alternative.
https://www.opieoils.co.uk/c-970-limited-slip-diff.aspx
Cheers
Tim
With the DCCD box, I would use the Motul Gear 300.
https://www.opieoils.co.uk/p-899-mot...-diff-oil.aspx
The best option for the diff is a synthetic 75w-90, like the Millers CRX NT LS, Motul Gear 300LS, Red Line 75w-90 GL5 or Gulf Competition LS. A SAE90 or 80w-90 mineral oil such as Motul 90PA, Fuchs Race Gear 90LS or Gulf Gear LS 80w-90 is a good, cheaper alternative.
https://www.opieoils.co.uk/c-970-limited-slip-diff.aspx
Cheers
Tim
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