Oil Advice and Recomendations here - Page 10 - ScoobyNet.com - Subaru Enthusiast Forum

Notices

Oil Advice and Recomendations here

Old 03 December 2012, 11:43 AM
  #271  
T20Driver
Scooby Regular
iTrader: (3)
 
T20Driver's Avatar
 
Join Date: May 2005
Location: Southampton(ish)
Posts: 494
Default

Originally Posted by Andy916 View Post
Yes, get an oil cooler. Before your next trackday.

Oilman replied to you saying a good oil is fine up to 150C, but that's based purely on the spec for a virgin oil ie. freshly changed before the trackday. The reality is that you get fuel dilution on an Impreza, especially a tuned one, which degrades the viscosity of the oil and impairs its high temperature performance. This is because the fuelling is a little uneven between cylinders, so the mapper makes it safe across the board. The result is that the fuel consumption isn't great and the oil suffers fuel dilution over time. In addition to fuel dilution, oil loses its viscosity with use due to shear forces in the engine.

Ok, here are a couple of real examples from a 360bhp classic with an oil cooler (max temp 100C). I had Millers analyze 2 oil samples. First up, Motul 300V 15W50 which had done 2-3k road miles plus 1 trackday (approx 100 miles on track). This was down to 79% of the viscosity on the spec sheet for virgin oil. Second was Millers CFS 10W60 after 2-3k road miles plus 2 trackdays (approx 200 miles on track). That was down to 75% of spec sheet viscosity. Millers tech guy deemed both viscosities to be "on the very low end of what is acceptable".

In case you're wondering why I did the oil analysis, previously I blew the big-end bearings on a trackday. The damage was almost certainly due to a combination of high temperature and slightly too old oil: 130C peak (this was before I got the oil cooler fitted), on CFS 10W60 which had done 4k road miles plus 1 previous trackday. Previously I had kept to 3k road miles with a max of 2 trackdays, but on that occasion I slipped up and paid the price. After the engine rebuild, and oil cooler install at the same time, I was keen to see how soon the oil degraded with use. The answer is that, in my engine at least, the oil viscosity is almost exhausted after 2-3k road miles and a max of 2 trackdays.

So, T20Driver, how often do you change your oil? And have you got an oil cooler yet?
Hi Andy ... thanks for taking the time to add your insights.

I usually change my oil every 5k miles with a quality fully synthetic oil and usually time the change to be just before a track day ..

As I say .. I normally 'bug out' when oil hits about 125 degrees .. and tbh .. I could easily change the way I drive in order to keep the temps down .. and indeed am considering doing so anyway as the car is now at 90k miles too .. so the risk of a failure is increasing I suspect despite being fully maintained etc

I am seriously considering an oil cooler .. but .. I'm also wondering whether it will be time to sell the car on next year as I've had it from new, all fully serviced and modded harmoniously, and I've had great fun out of it, but I'm also getting to that age when I want a little more comfort .. so the bottom line is a question of whether to simply make my next track day at Brands on the 14th a little less revy .. and let someone else add an oil cooler and catch can as their 1st upgrade if they want to do tracks .. otherwise I am not convinced they are required for day to day driving - which is 98% of its current use.

So .. I am still dithering on it - although I am getting quotes for the work. Certainly if I was 100% sure on keeping the car and doing more track days, then I would upgrade as you suggest

Anyway .. as I said at the start .. thanks for the input Dave .. and enjoy your car.

Chris
T20Driver is offline  
Old 24 January 2013, 10:13 PM
  #272  
peskett
Scooby Regular
 
Join Date: Aug 2012
Location: northamptonshire
Posts: 67
Default

Going to do an oil and filter change on my standard 05 wrx ppp mainly used for short journeys.
What would you recommend? Cheers
peskett is offline  
Old 25 January 2013, 10:01 AM
  #273  
oilman
Sponsor
Thread Starter
iTrader: (9)
 
oilman's Avatar
 
Join Date: Jul 2004
Location: South West
Posts: 3,669
Default

Hi

I would use a 5w-40 synthetic and you will find those through the link below.

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 300V, Redline and Gulf Competition. The Motul 8100 X-Cess, Millers XFS, Fuchs GT1 XTL/Supersyn, Shell Helix and Mobil Super 3000 are good, cheaper alternatives.

Cheers

Tim
oilman is offline  
Old 28 January 2013, 10:29 PM
  #274  
dunc1055
Scooby Regular
iTrader: (1)
 
Join Date: Jan 2013
Location: Bury St Edmunds
Posts: 43
Default 03 sti

Hi Oilman

I have been reading this thread very useful info here.

I have a 03 reg wrx sti type uk 6speed box standard, I realise i need 75w-90 but which, i want to crisp-en up the gear changes from cold as changing down in to 2nd and 1st can be a bit notchy. I was told about redline shock proof, is it this:

http://www.opieoils.co.uk/p-1022-red...il-75w-90.aspx

This says not recommended for most syncro-type transmissions, im confused

Also which syntrax the universal or the longlife.

Does my vehicle have any form of limited slip diff, i assume the rear diff takes same grade.

Also the garage that last serviced my vehicle from previous owner put 5w-30 performance oil, according to the invoice this seems a bit thin???

Sorry for all the question thanks

Thanks



dunc1055 is offline  
Old 28 January 2013, 10:47 PM
  #275  
JohnnyBlaze
Scooby Regular
 
JohnnyBlaze's Avatar
 
Join Date: Aug 2012
Location: East Yorkshire
Posts: 472
Default

Oilman need a recommendation please:

02 wrx
2lr turbo
Daily driver sometimes driven hard
Currently on 5w30 fully synthetic
No mods except panel filter and back box

Also is it 75/90 for gear box and diff

Thanks
JohnnyBlaze is offline  
Old 29 January 2013, 10:59 AM
  #276  
oilman
Sponsor
Thread Starter
iTrader: (9)
 
oilman's Avatar
 
Join Date: Jul 2004
Location: South West
Posts: 3,669
Default

Hi

A decent 5w-30 is fine

http://www.opieoils.co.uk/c-653-5w-30.aspx

The best ones there are the Fuchs/Silkolene Pro S, Motul 300V, Mobil ESP, Castrol Edge, Shell Helix Ultra Extra, Millers XF, Fuchs GT1 and Redline, but the Motul Eco-Energy, Millers XSS and Fuchs XTR are good cheaper alternatives.

Yes, you need a 75w-90 for the gearbox and diff and here are the ones we have.

http://www.opieoils.co.uk/c-673-75w-...ion-fluid.aspx

If you want to go for the best, the Millers CRX 75w-90 NT, Gulf Competition, Motul Gear 300, Redline 75w-90NS and Millers TRX are ideal for the gearbox. The Castrol Universal, Motul Motylgear and Fuchs Gear Syn are all decent alternatives. The Fuchs Syn 5, Millers CRX, Redline 75w-90 GL5, Motul Gear 300 and Gulf Competition are ideal for the diff. The Fuchs Sintopoid, Castrol Syntrax Longlife, Millers TRX, Motul Motylgear, Mobil SHC and Amsoil FGR are also good choices.

Cheers

Tim
oilman is offline  
Old 29 January 2013, 11:14 AM
  #277  
oilman
Sponsor
Thread Starter
iTrader: (9)
 
oilman's Avatar
 
Join Date: Jul 2004
Location: South West
Posts: 3,669
Default

Originally Posted by dunc1055 View Post
Hi Oilman

I have been reading this thread very useful info here.

I have a 03 reg wrx sti type uk 6speed box standard, I realise i need 75w-90 but which, i want to crisp-en up the gear changes from cold as changing down in to 2nd and 1st can be a bit notchy. I was told about redline shock proof, is it this:

http://www.opieoils.co.uk/p-1022-red...il-75w-90.aspx

This says not recommended for most syncro-type transmissions, im confused

Also which syntrax the universal or the longlife.

Does my vehicle have any form of limited slip diff, i assume the rear diff takes same grade.

Also the garage that last serviced my vehicle from previous owner put 5w-30 performance oil, according to the invoice this seems a bit thin???

Sorry for all the question thanks

Thanks



Hi

The Shockproof oils are fine with synchros, we've never come across anyone who has had a problem with the Shockproof in a synhcro gearbox, and we sell loads of it. If you're having cold shift problems, the Shockproof wouldn't be my choice as it's a little thicker than standard stuff due to the way it works. I think I would go for the Motul Gear 300 as it always seems to work well in an Impreza.

http://www.opieoils.co.uk/p-899-motu...ter-based.aspx

That's fine for the diff too. It does have a LSD, but it doesn't need a LS specific oil.

If you want Castrol, it's the Syntrax Universal, although that is a couple of steps down in quality from the Gear 300.

A decent 5w-30 is fine for a standard car, but if it's driven hard on a regular basis or is modified, a 5w-40 is a better option.

Cheers

Tim
oilman is offline  
Old 29 January 2013, 11:23 AM
  #278  
JohnnyBlaze
Scooby Regular
 
JohnnyBlaze's Avatar
 
Join Date: Aug 2012
Location: East Yorkshire
Posts: 472
Default

Oilman you say: "A decent 5w-30 is fine for a standard car, but if it's driven hard on a regular basis or is modified, a 5w-40 is a better option." Is it not just a better idea to go with 5w40 then for extra protection? Or is there disadvantages to this over 5w30? How much diffrence is there between the 2?
JohnnyBlaze is offline  
Old 29 January 2013, 11:37 AM
  #279  
oilman
Sponsor
Thread Starter
iTrader: (9)
 
oilman's Avatar
 
Join Date: Jul 2004
Location: South West
Posts: 3,669
Default

There might be a little difference, there might be more. Oil viscosity is not an exact point, it's a band so you can have a thick 5w-30 and a thin 5w-30. That means that a 5w-30 can be almost the same in viscosity as a 5w-40 and there is no harm in using either in your car.

Cheers

Tim
oilman is offline  
Old 29 January 2013, 12:48 PM
  #280  
dunc1055
Scooby Regular
iTrader: (1)
 
Join Date: Jan 2013
Location: Bury St Edmunds
Posts: 43
Default

Originally Posted by oilman View Post
Hi

The Shockproof oils are fine with synchros, we've never come across anyone who has had a problem with the Shockproof in a synhcro gearbox, and we sell loads of it. If you're having cold shift problems, the Shockproof wouldn't be my choice as it's a little thicker than standard stuff due to the way it works. I think I would go for the Motul Gear 300 as it always seems to work well in an Impreza.

http://www.opieoils.co.uk/p-899-motu...ter-based.aspx

That's fine for the diff too. It does have a LSD, but it doesn't need a LS specific oil.

If you want Castrol, it's the Syntrax Universal, although that is a couple of steps down in quality from the Gear 300.

A decent 5w-30 is fine for a standard car, but if it's driven hard on a regular basis or is modified, a 5w-40 is a better option.

Cheers

Tim

Thanks for your reply oilman.

I just checked the dipstick for the gear oil after a run it was just above the Low mark the car was slightly leaning to the Offside, i am wondering if a top up would help, i think i would rather change it, but if i did top up how much would it take to bring it up to full, and i have read about slightly over filling can help?

Thanks
dunc1055 is offline  
Old 29 January 2013, 01:12 PM
  #281  
oilman
Sponsor
Thread Starter
iTrader: (9)
 
oilman's Avatar
 
Join Date: Jul 2004
Location: South West
Posts: 3,669
Default

I have no idea how far apart the marks are on the dipstick, all I know if it takes about 3.5L in total.

Cheers

Tim
oilman is offline  
Old 29 January 2013, 01:50 PM
  #282  
dunc1055
Scooby Regular
iTrader: (1)
 
Join Date: Jan 2013
Location: Bury St Edmunds
Posts: 43
Default

Thanks Tim

I have just ordered 5 Liters of the Motul 300 75w-90 that you recommended, you have it at a very good price and with 1pound delivery, demon tweeks have it at over 20quid a liter.

looking forward to getting it changed are there any washers i need?

Thanks

Duncan
dunc1055 is offline  
Old 29 January 2013, 01:52 PM
  #283  
oilman
Sponsor
Thread Starter
iTrader: (9)
 
oilman's Avatar
 
Join Date: Jul 2004
Location: South West
Posts: 3,669
Default

Hi Duncan

Thanks for the order, it is a bargain at the moment.

Not sure about the washers.

Cheers

Tim
oilman is offline  
Old 30 January 2013, 12:32 AM
  #284  
glensti
Scooby Regular
 
Join Date: May 2008
Posts: 110
Default

Hi oilman.

Just got myself a 53 plate wrx sti. 65000 miles totally standard except cat back. Massive service history but don't know what oil was last used before I bought it on service. Is castrol edge 5w 30 ok to use to top up if needed before next service at all. Thankyou. Glen
glensti is offline  
Old 30 January 2013, 10:43 AM
  #285  
oilman
Sponsor
Thread Starter
iTrader: (9)
 
oilman's Avatar
 
Join Date: Jul 2004
Location: South West
Posts: 3,669
Default

Hi Glen

Yes, that's fine to top up with.

Cheers

Tim
oilman is offline  
Old 30 January 2013, 11:15 AM
  #286  
stvili
Scooby Regular
iTrader: (6)
 
Join Date: Feb 2011
Posts: 103
Default

Hi Oilman

What oil would you use for dog box on subaru and also what engine oil on highly modified subaru engine used mostly for track days . Cheers Stan
stvili is offline  
Old 30 January 2013, 12:04 PM
  #287  
oilman
Sponsor
Thread Starter
iTrader: (9)
 
oilman's Avatar
 
Join Date: Jul 2004
Location: South West
Posts: 3,669
Default

Hi

The Redline Lightweight Shockproof, Millers CRX or Fuchs Syn 5 are ideal for the dogbox.

http://www.opieoils.co.uk/c-673-75w-...ion-fluid.aspx

A 10w-50 is likely to be the best choice for a highly modded engine and these are the ones that we stock.

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

The Nanodrive CFS is, on paper, the best oil available, but the Pro S and CFS are both really good oils, so all are good choices for your car.

Cheers

Tim
oilman is offline  
Old 04 February 2013, 11:18 PM
  #288  
Sub-Subaru
Scooby Regular
 
Join Date: Sep 2012
Location: Dorset
Posts: 95
Default

Subaru Impreza WRX Uk model, 2004, 2.0 turbo, 80,000 miles.

Currently standard, but might possibly do a basic remap in the next year or so.

Currently it is my daily driver covering 44 miles a day. Might soon become only used for shopping trips and weekends. Not really driven mega hard but is used properly

Looking for good quality engine and gearbox oil recommendations, price isn't really an isssue just after good quality that will help the engine as much as possible.
Sub-Subaru is offline  
Old 05 February 2013, 12:09 AM
  #289  
Donnie Brasco 46
Scooby Regular
iTrader: (2)
 
Join Date: Sep 2012
Location: Herts
Posts: 316
Default

Subaru say 5w/30 but most people on here tend to use 10w/30 or 10w/40.

I'm getting Subaru to service my impreza soon - I'm already wondering what oil they'll use.

Obviously fully synthetic is better than semi/synth. If money us no option I'd go Mobil one or the top gold castrol cos then you can't go wrong. I hear things about millers but yank oils just aren't the same in my humble opinion
Donnie Brasco 46 is offline  
Old 05 February 2013, 12:27 AM
  #290  
steviechi
Scooby Regular
iTrader: (2)
 
Join Date: Oct 2010
Location: Durham
Posts: 73
Default Best Engine oil please?

Impreza WRX but with TD05-20G, 650cc injectors and Sportscat exhaust etc 360bhp

Daily drive - 15 mile each way, gets thrashed in the middle - allowed to warm up and cool down. Road use only

Car has 110,000 miles on the clock

Recommendation for Engine oild and gearbox oil (is Slick 50 gearbox additive any good?)

Thanks
Steve
steviechi is offline  
Old 05 February 2013, 10:02 AM
  #291  
oilman
Sponsor
Thread Starter
iTrader: (9)
 
oilman's Avatar
 
Join Date: Jul 2004
Location: South West
Posts: 3,669
Default

Originally Posted by Sub-Subaru View Post
Subaru Impreza WRX Uk model, 2004, 2.0 turbo, 80,000 miles.

Currently standard, but might possibly do a basic remap in the next year or so.

Currently it is my daily driver covering 44 miles a day. Might soon become only used for shopping trips and weekends. Not really driven mega hard but is used properly

Looking for good quality engine and gearbox oil recommendations, price isn't really an isssue just after good quality that will help the engine as much as possible.
Originally Posted by steviechi View Post
Impreza WRX but with TD05-20G, 650cc injectors and Sportscat exhaust etc 360bhp

Daily drive - 15 mile each way, gets thrashed in the middle - allowed to warm up and cool down. Road use only

Car has 110,000 miles on the clock

Recommendation for Engine oild and gearbox oil (is Slick 50 gearbox additive any good?)

Thanks
Steve
A 5w-40 is ideal for both of you, although Steve, go for one of the good ones.

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 300V, Redline and Gulf Competition. The Motul 8100 X-Cess, Millers XFS, Fuchs GT1 XTL/Supersyn, Shell Helix and Mobil Super 3000 are good, cheaper alternatives.

You need a 75w-90 for the gearbox and here are the ones we have.

http://www.opieoils.co.uk/c-673-75w-...ion-fluid.aspx

If you want to go for the best, the Millers CRX 75w-90 NT, Gulf Competition, Motul Gear 300, Redline 75w-90NS and Millers TRX are ideal for the gearbox. The Castrol Universal, Motul Motylgear and Fuchs Gear Syn are all decent alternatives.

Steve, don't use oil additives - they ruin something that the oil companies have spent a lot time developing.

http://www.opieoils.co.uk/pdfs/tech-...-additives.pdf

Cheers

Tim
oilman is offline  
Old 05 February 2013, 10:05 AM
  #292  
oilman
Sponsor
Thread Starter
iTrader: (9)
 
oilman's Avatar
 
Join Date: Jul 2004
Location: South West
Posts: 3,669
Default

Originally Posted by Donnie Brasco 46 View Post
Subaru say 5w/30 but most people on here tend to use 10w/30 or 10w/40.

I'm getting Subaru to service my impreza soon - I'm already wondering what oil they'll use.

Obviously fully synthetic is better than semi/synth. If money us no option I'd go Mobil one or the top gold castrol cos then you can't go wrong. I hear things about millers but yank oils just aren't the same in my humble opinion
There are some good American oils, but there are some rubbish ones too. A lot of it is due to their attitude to oil - buy cheap and change often. In Europe it's different as we tend to buy better oils and leave them in for longer. There are a couple of good American oils, but there is a lot of rubbish too.
oilman is offline  
Old 05 February 2013, 02:09 PM
  #293  
Sub-Subaru
Scooby Regular
 
Join Date: Sep 2012
Location: Dorset
Posts: 95
Default

Thanks Oilman.

If you were pushed to choose an engine one and gearbox one for the top quality ones you recommended, which would you choose? As I haven't really heard of these brands until recently so still not sure which to choose out of those.

thanks
Sub-Subaru is offline  
Old 05 February 2013, 02:35 PM
  #294  
oilman
Sponsor
Thread Starter
iTrader: (9)
 
oilman's Avatar
 
Join Date: Jul 2004
Location: South West
Posts: 3,669
Default

I really hate that question, I'd probably go for the Fuchs Pro S, Millers CFS or Gulf Competition as they are better value than the other options for the engine, while still being top quality. I'd use the Motul Gear 300 in the gearbox, it always seems to work well in Imprezas.

Cheers

Tim
oilman is offline  
Old 10 February 2013, 04:47 PM
  #295  
SCOOBYTRIS
Scooby Newbie
 
Join Date: May 2010
Posts: 3
Default

Hi there
Could you please help me ?
I have a virtually standard bar exhaust full decat ,dump valve 1995 Wrx sti 555 v limited roof vent model .
I bought it recently runs great however it must have had a minor oil leak turbo side ie smell of burning oil little smoke which I guess will be rocker gasket hopefully .
I just changed the oil two days ago and have had symptoms worse than before .
I have just used shell helix ultra 5w40 fully synth oil is this ok or too thin for my classic ?
Or will it be ok if I track down leak?
I noticed a small spill on garage floor and a bit on lower exhaust heatshield which will burn of worse than before .
Any advice will be great
Thanks Tris
SCOOBYTRIS is offline  
Old 10 February 2013, 05:02 PM
  #296  
stockcar
Scooby Regular
 
Join Date: Mar 2002
Location: north east
Posts: 5,308
Default

sounds like potentially OS rocker gasket leak which is fairly common due to the heat off the turbo...............

personally wouldn't use 5w oil in a classic, 10w min................

alyn
stockcar is offline  
Old 10 February 2013, 06:14 PM
  #297  
SCOOBYTRIS
Scooby Newbie
 
Join Date: May 2010
Posts: 3
Default

Hi Alyn

Thanks for quick reply etc .
I will have to get the rocker replaced and drop oil again and put 10w in sounds like a plan .should I put 10w 40 fully or part synthetic in which will suit my cars needs best any band in particular ?
Thanks TRis
SCOOBYTRIS is offline  
Old 10 February 2013, 06:17 PM
  #298  
oilman
Sponsor
Thread Starter
iTrader: (9)
 
oilman's Avatar
 
Join Date: Jul 2004
Location: South West
Posts: 3,669
Default

If there is no piston slap, a 5w-40 is fine, it will be giving better cold start protection than a 10w-40.

Cheers

Tim
oilman is offline  
Old 10 February 2013, 06:43 PM
  #299  
peter.p&j
Scooby Regular
 
peter.p&j's Avatar
 
Join Date: Apr 2009
Location: north ayrshire
Posts: 31
Default

my scoob has a slight piston slap what oil viscosity is best
1997 wrx classic import
cheers
peter.p&j is offline  
Old 10 February 2013, 06:55 PM
  #300  
SCOOBYTRIS
Scooby Newbie
 
Join Date: May 2010
Posts: 3
Default

Hi Tim
Thanks for reply also .
The engine runs very smoothly and sounds pretty quite for a classic on tick over .
I will fix gasket leak and run it with the 5 w 40 shell helix ultra and see how I get on would be a shame to drop it and waste it after only such a short time .
I also have a classic 1995 wrx v2 which has done more miles and will be due a service soon I take it the 10w 40 will be better for that one maybe also ?or is there any suited for higher mileage engine it has just done over 100k miles ?
My other one the Sti 555 v2 has under 60k miles which is pretty low for year .
This oil thing is a real science and takes a bit to grasp .
I know synthetic was not around when my cars were made but has better qualities generally
I just want to keep my babies in good health and use them both responsibly but need to know they are covered as best as possb
Thanks Tris
SCOOBYTRIS is offline  

Thread Tools
Search this Thread
Quick Reply: Oil Advice and Recomendations here


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.