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Old 06 March 2018, 10:38 AM
  #811  
Taz_devil
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Originally Posted by oilman View Post
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
Originally Posted by drummog View Post
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
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Old 21 March 2018, 02:35 PM
  #812  
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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 02:41 PM.
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Old 21 March 2018, 02:58 PM
  #813  
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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
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Old 21 March 2018, 03:02 PM
  #814  
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Originally Posted by oilman View Post
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
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 03:33 PM.
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Old 22 April 2018, 06:52 PM
  #815  
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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
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Old 23 April 2018, 09:30 AM
  #816  
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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
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Old 23 April 2018, 10:05 AM
  #817  
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Thatís brilliant thank you
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Old 31 May 2018, 03:20 PM
  #818  
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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 ?
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Old 31 May 2018, 03:44 PM
  #819  
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I would go for a 5w-40, but a 10w-40 would also be okay.

Cheers

Tim
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Old 16 June 2018, 01:27 PM
  #820  
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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 01:33 PM.
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Old 17 June 2018, 10:59 AM
  #821  
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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
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Old 26 June 2018, 05:17 PM
  #822  
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Thanks oil man. Ordered more nanodrive from you guys and replaced the oil. Not worth the chance since Iíll be running it next few months.
Will drop you an order come March !

Thanks
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Old 26 June 2018, 05:27 PM
  #823  
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Thanks for the order, it's good stuff.
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Old 26 June 2018, 06:50 PM
  #824  
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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?
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Old 26 June 2018, 06:50 PM
  #825  
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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?
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Old 16 August 2018, 01:22 AM
  #826  
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Default 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
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Old 07 September 2018, 06:21 AM
  #827  
Braydon Southwick
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Default Subaru forester

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

Originally Posted by oilman View Post
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
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Old 07 September 2018, 09:13 AM
  #828  
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Originally Posted by Braydon Southwick View Post
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 youíve completely ran it out of oil youíve scored the bores up if not worse, rebuild time my friend
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Old 07 September 2018, 09:34 AM
  #829  
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Originally Posted by jdmmike View Post
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
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
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Old 07 September 2018, 09:35 AM
  #830  
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Originally Posted by RossyB View Post


you understand that your engine needs oil to lubricate the moving parts right? Chances are if youíve completely ran it out of oil youíve 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
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Old 04 February 2019, 12:29 PM
  #831  
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Subaru impreza sti widetrack uk 04 , with dccd what diff and gearbox please petty standard 100k millage
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Old 04 February 2019, 03:34 PM
  #832  
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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
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Old 04 March 2019, 03:32 PM
  #833  
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Silly question could I use Motul Gear 300 for gearbox and then Motul Gear 300ls for rear diff

does that hat sound about rite . And how much do I need
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Old 04 March 2019, 03:41 PM
  #834  
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Yes, that's ideal.

If it's the 6 speed box, it takes 4.1L, or 3.5L for the 5 speed. The diff takes 800ml. If it's the 6 speed, you can get away with buying 4L and you'll have 200ml left over from the diff to make up the difference.

Cheers

Tim
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Old 15 April 2019, 10:58 AM
  #835  
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Default High mileage modified WRX

Hi Oilman,

My WRX is now pushing 150k miles, and has been running 360 bhp for at 50k of those miles. (TD05-20G turbo and Andy Forest mods and tune).

Its used as a daily drive and gets full throttle in 2nd for a few times every journey (15mile to and from work). Have been using Millers nonotech 10W-40 or similar high quality oil and changing every 3k miles. Temps normally around 90C.

Its started imtermittently using oil (maybe sneaking past sealing rings while parked up) occasionally puff of white smoke on start up. So its going to need a rebuild soon.

Are their any oils better with high mileage (Mobil seemed to market some oils for high mileage)?
And should i stick with 10W-40 or change?

Thanks..
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Old 15 April 2019, 11:12 AM
  #836  
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Hi

High mileage oils are pointless, they are basically just thicker oils with the additives that decent oils should have in them anyway.

It might be worth going for a 10w-50.

https://www.opieoils.co.uk/c-659-10w-50.aspx

They are all really good oils to pick from and any of them will be fine for it.

Cheers

Tim
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Old 17 April 2019, 01:25 PM
  #837  
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Default Oil flush

Is it ok to use oil flushes prior to service? Are they ok with the turbo bearings etc? Ive bought a bugeye and the current oil is black as coal.
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Old 17 April 2019, 02:17 PM
  #838  
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Hi,

Unless it's in a really bad state, I wouldn't as they can be too harsh. If you want to give it a really good clean, drop the oil out, replace it with some cheap 10w-40 oil and leave that in for a few days. That will give the detergents in the oil a chance to gently clean it, then drain that oil and replace with some decent stuff.

Cheers

Tim
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Old 17 April 2019, 02:59 PM
  #839  
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Originally Posted by oilman View Post
Hi,

Unless it's in a really bad state, I wouldn't as they can be too harsh. If you want to give it a really good clean, drop the oil out, replace it with some cheap 10w-40 oil and leave that in for a few days. That will give the detergents in the oil a chance to gently clean it, then drain that oil and replace with some decent stuff.

Cheers

Tim
Thanks will do.
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Old 20 April 2019, 10:26 PM
  #840  
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Default Fiat Ducato oil?

Hi Oilman

I'll be ordering 10W-50 for my Impreza as per your recommendation, just wondered what you recommend for a Fiat Ducato 2.3 diesel 130bhp with 130k. Just converted to camper van and going on a big european tour this summer (so prolonged driving at ambient 35C)

Steve

Last edited by steviechi; 21 April 2019 at 10:22 PM. Reason: Spelling
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