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Old 08 February 2018, 12:48 PM
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Default Which oil?
Hi all,

Just wondering what oil would be best to use, the car is a 350hp 2005 Subaru STi Type 25 (blobeye). Car isn't tracked just used for daily driving and the odd spirited drive.

Going through the history it looks like 10w/40 semi Synthetic has been used by Surrey Subaru Specialists so I guess this would be ideal? I've heard that 10w/60 is also an option?

Also which brand to go for? I noticed Millers Oil have different variants such as Nanodrive EE and Trident?

What spark plugs should be fitted?

Best Regards,

Subaru Collector 555.
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Old 08 February 2018, 06:23 PM
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Hawkeye D
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Millers CFS 10w60 fully synthetic competition oil would go well in that I should think. Very good quality oil that is.
Been using it in my forged Hawk Spec D (342 horses) with no problems. Lasts the test of time too. Good stuff.
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Old 09 February 2018, 02:28 PM
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Originally Posted by Hawkeye D
Millers CFS 10w60 fully synthetic competition oil would go well in that I should think. Very good quality oil that is.
Been using it in my forged Hawk Spec D (342 horses) with no problems. Lasts the test of time too. Good stuff.
Thanks I've heard good things about 10w60 so will give that a try
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Old 09 February 2018, 02:58 PM
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i wouldnt use 60 on a road car. 50 tops
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Old 09 February 2018, 03:04 PM
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in both my spec d 330/350 and now my FSTi I use 5/40 fully synth and have done for a long time. However I dont track either cars and neither are forged.
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Old 09 February 2018, 03:06 PM
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Jon T
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I use 10w50 millers race oil
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Old 09 February 2018, 04:26 PM
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What's wrong with 10w/60? BTW the car is forged.

Best regards,

Subaru Collector 555.
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Old 09 February 2018, 04:46 PM
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bugeyestuart
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10w/60 Castrol Edge in mine. Forged 2.5 sti.

Get mine from RCM as advised by them.
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Old 09 February 2018, 05:26 PM
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Millers CFS 10/50 what you need...
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Old 09 February 2018, 06:03 PM
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Originally Posted by TIZERBOY
Millers CFS 10/50 what you need...
+1
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Old 09 February 2018, 08:32 PM
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Originally Posted by Subaru Collector 555
What's wrong with 10w/60? BTW the car is forged.

Best regards,

Subaru Collector 555.
Its too thick, if you need that for a forged build then there is a problem. 5w40 for anything upto 350ish bhp, 10w50 for a bigger power build.

Tony
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Old 16 February 2018, 01:37 PM
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Anyone used Shell Helix HX7 10W-40 Synthetic?

https://www.carparts4less.co.uk/cp4l...SABEgLwyPD_BwE
Last edited by User 21721; 16 February 2018 at 01:42 PM.
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Old 16 February 2018, 02:30 PM
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Originally Posted by Subaru Collector 555
Anyone used Shell Helix HX7 10W-40 Synthetic?

https://www.carparts4less.co.uk/cp4l...SABEgLwyPD_BwE
if you want a very good oil at humble money then i recommend
https://www.nielsencdg.co.uk/total-q...re-tot-157104/
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