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bomber7136 Profile
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Date Registered: 01-2010
Location: Melbourne, VIC
TOTAL POSTS: 20
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GL-5 gear oil in manual gearbox


I recently picked up some synthetic GL-5 gear oil thinking it was synthetic GL-4. Searching the internet there seem to be quite a few myths surrounding the use of GL-5 gear oil but I am not sure whether to go aherad and use it or not. Has anyone used a synthetic GL-5 oil in their manual exy?

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Wayne
X-1491c

2001 T30 ST 5spd
Tow bar, roof racks, floor mats, cargo blind
Bonnet protector, Ironman springs lift, strut bar, equipe 4x4 nudge bar
27/Feb/2010, 3:05 pm Link to this post Send Email PM   Send Private Message
 
Dadd Profile
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Date Registered: 06-2008
Location: New South Wales
TOTAL POSTS: 182
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Re: GL-5 gear oil in manual gearbox


It's generally not advisable to use a GL5 gear oil where it's not recommended by the manufacturer.
GL5 oils are usually recommended for hypoid differentials - front wheel drive transmissions, which is essentially what the X Trail transmission is, usually specify a GL4 oil. Nissan specifies GL4 for the transaxle and GL5 for the rear diff if I remember correctly.
GL5 oils have more extreme pressure additives than GL4 oils because of the shear forces inherent in hypoid gears ( rear diff ) and these additives can have a bad effect on the syncromesh cones in a manual transmission. You would most likely experience a deterioration in gear shift quality and potential damage to the synchro cones in the long term.

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Glenn X-889
2008 ST Manual
20/Mar/2010, 7:40 am Link to this post Send Email PM   Send Private Message ICQ AIM
 
bomber7136 Profile
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Date Registered: 01-2010
Location: Melbourne, VIC
TOTAL POSTS: 20
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Re: GL-5 gear oil in manual gearbox


Thanks for the advice Glenn. I hadn't yet used the oil so I took it back and swapped it for GL-4 - Nulon 100% Synthetic 75W-85 Smooth Shift Manual Gearbox Oil.

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Wayne
X-1491c

2001 T30 ST 5spd
Tow bar, roof racks, floor mats, cargo blind
Bonnet protector, Ironman springs lift, strut bar, equipe 4x4 nudge bar
29/Mar/2010, 7:09 pm Link to this post Send Email PM   Send Private Message
 
Dadd Profile
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Date Registered: 06-2008
Location: New South Wales
TOTAL POSTS: 182
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Re: GL-5 gear oil in manual gearbox


Hi Wayne

I believe that Nulon is pretty good - I was planning on using it myself when the transmission oil needs changing.
 Maybe you could post your experience with it in terms of whether it makes the gear change better / smoother etc.


PS Slight correction to my earlier post GL 5 is recommended for rear diff and transfer case in the X Trail

Last edited by Dadd, 29/Mar/2010, 8:14 pm


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Glenn X-889
2008 ST Manual
29/Mar/2010, 8:10 pm Link to this post Send Email PM   Send Private Message ICQ AIM
 
bomber7136 Profile
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Date Registered: 01-2010
Location: Melbourne, VIC
TOTAL POSTS: 20
Reply | QUOTE
Re: GL-5 gear oil in manual gearbox


Well I've been running the Nulon 75W-85 Smooth Shift GL-4 gear oil for about a year now. It's a little hard remembering what the gear changes were like before the oil change but I am very happy with the Nulon oil. 1st to 2nd can still be a little notchy but most changes are lovely and smooth and I would happily recommend this oil.

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Wayne
X-1491c

2001 T30 ST 5spd
Tow bar, roof racks, floor mats, cargo blind
Bonnet protector, Ironman springs lift, strut bar, equipe 4x4 nudge bar
21/Feb/2011, 8:54 am Link to this post Send Email PM   Send Private Message
 
Robbo0001 Profile
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Date Registered: 07-2008
Location: Brisvegas, Australia
TOTAL POSTS: 1063
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Re: GL-5 gear oil in manual gearbox


I have had Nulon in the rear diff and Auto transmission for around 10000 kms, andhave had no issues.
Going to be changing the engine oils on all our cars to a fully synthetic 5W/30 Nulon. Looking at a 20 Litre drum for three services a year, makes it easier and more cost effective when doing your own servicing.
Cant fault Nulon oils, or customer service at all, from my experience to date.

Edited spelling

Last edited by Robbo0001, 21/Feb/2011, 7:10 pm


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Dave
99 GU Patrol 2.8TD
Ex-2002 T30 TI Xtrail
21/Feb/2011, 7:08 pm Link to this post Send Email PM   Send Private Message
 


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