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06 March 2018, 11:38 AM

#811

Taz_devil

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Quote:

Originally Posted by oilman

Hi

15w-40 tends to be the cheap option, so it's probably basic oil.

I would switch to a 5w-40 or 10w-40.

Cheers

Tim

Quote:

Originally Posted by drummog

Yes, I bet he had too much 15W/40 lying around because he bought too much by mistake. You tend to put in old oil burning vans.

ok thanks, I will probably do this to check if there is any metal in the oil as I suspect a spun bearing. I thought perhaps 15w 40 would offer more protection to an older engine, but by my reckoning, it doesn't circulate as well when cold and probably explains why I have a piston slap-like noise now

21 March 2018, 03:35 PM

#812

Rusti

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Hi Oilman,

Which rear diff oil and gearbox oil would you recommend for a 2004 Forester sti?

Thanks.

Last edited by Rusti; 21 March 2018 at 03:41 PM.

21 March 2018, 03:58 PM

#813

oilman

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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

21 March 2018, 04:02 PM

#814

Rusti

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Quote:

Originally Posted by oilman

Thanks 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.

22 April 2018, 07:52 PM

#815

Furiokid

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Hi, what oil would you recommend for an 04 Forester STI with 73k miles. Remapped to 1.4 bar, runs oil temps of approx 90-95 degrees normally

23 April 2018, 10:30 AM

#816

oilman

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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

23 April 2018, 11:05 AM

#817

Furiokid

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That’s brilliant thank you

31 May 2018, 04:20 PM

#818

EndaITR

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Standard Jap blob STi only used in Ireland during summer, so ideally a summer oil. Will I still use 5/40 or will I go with 10/40 or does it really matter ?

31 May 2018, 04:44 PM

#819

oilman

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I would go for a 5w-40, but a 10w-40 would also be okay.

Cheers

Tim

16 June 2018, 02:27 PM

#820

mellinator2k

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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!

Last edited by mellinator2k; 16 June 2018 at 02:33 PM.

17 June 2018, 11:59 AM

#821

oilman

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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

26 June 2018, 06:17 PM

#822

mellinator2k

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Thanks oil man. Ordered more nanodrive from you guys and replaced the oil. Not worth the chance since I’ll be running it next few months.
Will drop you an order come March !

Thanks

26 June 2018, 06:27 PM

#823

oilman

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Thanks for the order, it's good stuff.

26 June 2018, 07:50 PM

#824

mellinator2k

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One last question I put motul hear 300 in my gearbox and rear diff - 97 sti v3

again got it all from you guys

shoukd that be ok?

26 June 2018, 07:50 PM

#825

mellinator2k

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One last question I put motul hear 300 in my gearbox and rear diff - 97 sti v3

again got it all from you guys

shoukd that be ok?

16 August 2018, 02:22 AM

#826

jdmmike

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Gearbox and diff

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

07 September 2018, 07:21 AM

#827

Braydon Southwick

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Subaru forester

I ran my car out of oil and now it will turn over but not start what would be wrong with it ?

Quote:

Originally Posted by oilman

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

07 September 2018, 10:13 AM

#828

RossyB

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Quote:

Originally Posted by Braydon Southwick

I ran my car out of oil and now it will turn over but not start what would be wrong with it ?

you understand that your engine needs oil to lubricate the moving parts right? Chances are if you’ve completely ran it out of oil you’ve scored the bores up if not worse, rebuild time my friend

07 September 2018, 10:34 AM

#829

oilman

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Quote:

Originally Posted by jdmmike

Hi

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

07 September 2018, 10:35 AM

#830

oilman

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Quote:

Originally Posted by RossyB

you understand that your engine needs oil to lubricate the moving parts right? Chances are if you’ve completely ran it out of oil you’ve scored the bores up if not worse, rebuild time my friend

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

04 February 2019, 01:29 PM

#831

Ryoishikawa

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Subaru impreza sti widetrack uk 04 , with dccd what diff and gearbox please petty standard 100k millage

04 February 2019, 04:34 PM

#832

oilman

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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