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Gear box oil

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Old 20 December 2007, 08:13 PM   #1
Nickyv4
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Default Gear box oil

Just a quick question for u guys who have used various diffrent oils.

Which is the best?

Nicky
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Old 20 December 2007, 09:49 PM   #2
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I find castrol syntrax/driveline best.
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Old 20 December 2007, 10:06 PM   #3
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Redline Shock proof.
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Old 20 December 2007, 10:09 PM   #4
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has any1 used silkoline i think its called, if they have is this anygood my local performance centre sell it.

If any of u are from Northeast ul know Revolution and if u dont look them up on the net great place.
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Old 20 December 2007, 10:20 PM   #5
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castrol syntrax
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Old 21 December 2007, 10:17 AM   #6
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Quote:
Originally Posted by Nickyv4 View Post
has any1 used silkoline i think its called, if they have is this anygood my local performance centre sell it.

If any of u are from Northeast ul know Revolution and if u dont look them up on the net great place.
I've used this in my old 5 speed (had no issues as such) and in my 6 speed (had issues!), the oil is top quality but not the best for scooby 6 speeds as its toooo thin and slippery. Castrol best bet.
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Old 21 December 2007, 11:08 AM   #7
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From experience it could be an expensive mistake to use full-synthetic fluid in the Impreza box. It works for some but there's also quite a few who have had issues with the synchro performance. It's wiser to stay with a good semi-syn. fluid such as Castrol Driveline (Syntrax)
By all means use a full-syn. in the rear diff.
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Old 23 December 2007, 03:55 PM   #8
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redline or royal purple gear oil
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Old 26 December 2007, 03:40 PM   #9
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Is there only 1 syntrax driveline is it the universil 1 thats 75-90. how many litres will i need cos the only place i can find it is Halfords and they only sell it in 1 litres.
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Old 28 December 2007, 12:35 AM   #10
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Quote:
Originally Posted by Nickyv4 View Post
Is there only 1 syntrax driveline is it the universil 1 thats 75-90. how many litres will i need cos the only place i can find it is Halfords and they only sell it in 1 litres.
That's it. 5 litres will do the gearbox and final drive. I believe the box takes 3.5 litres. Final drive 0.8 litres.
There was a group buy from Opie oils on this a couple of weeks ago. Maybe still worth giving them a call!
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Old 28 December 2007, 08:22 PM   #11
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Depends on the car,use, and the diffs in your impreza.

Castrol Syntrax 75/90 for GT/WRX

Castrol SAF X or SAF XJ 75/140 for DCCD/LSD cars

Redline Heavy Shockproof and Lightweight Shockproof is ONLY good on dog gearboxes, and your syncromesh standard impreza box dont like it at ALL. Stick to "ordinary" Redline Syntetic, and not to shockproof series.

For impreza dog gearboxes: Shockproof light/heavy is a good choice.

5litres is more than enough: 4L on the gearbox and 1L for the rear diff. If your impreza has a gearbox oil cooler(spec c), you will need more oil.

Last edited by silverwrxnor; 28 December 2007 at 08:25 PM.
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Old 28 December 2007, 10:31 PM   #12
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Quote:
Originally Posted by JohnD View Post
From experience it could be an expensive mistake to use full-synthetic fluid in the Impreza box. It works for some but there's also quite a few who have had issues with the synchro performance. It's wiser to stay with a good semi-syn. fluid such as Castrol Driveline (Syntrax)
By all means use a full-syn. in the rear diff.
JohnD
Castrol driveline/syntrax definately, ive tried a few fully synths in my classic and the syncros are affected by using them after trying a few different ones including millers/mobil/silkolene syn 5 ended up using castrol and love it.Initially with the syn 5 for a while were ok then noticed the change gradually getting a bit more notchy if ya like (bin here before had usual prob with 5th gear syncro)changed to syntrax-never been any trouble since an that were ages ago.
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Old 10 February 2008, 06:48 PM   #13
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yup,i had castrol syntrax in my box, just changed it,done 11k,and used valvoline dualblend synthetic blend,crunches from 5th to 4th now ASWELL AS FROM 1ST TO 2ND,it did the 1st to 2nd so thats not new but no wi have 2 gear crunches,back to castrol syntrax/driveline its called now.
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