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Difference between Gear oils

 
 
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wanderinstar
Gate Opener


Joined: 11 Dec 2011
Odometer: 44
Location: Barnoldswick,Lancs.



PostPosted: Sat Jan 21, 2012 11:40 am    Post subject: Difference between Gear oils Reply with quote

Can anyone tell me the difference between GL4 and GL5 gear oils.??
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weldingscotty803
Just got MTs


Joined: 28 Apr 2010
Odometer: 275
Location: chesterfield


1996 Suzuki Vitara

PostPosted: Sat Jan 21, 2012 11:49 am    Post subject: Reply with quote

I'm not 100 percent but i think either the gl5 or gl4 is better suited to gearboxes with yellow metals or something. I read a thread on a vitara gearbox that was wrecked due to using the wrong oil
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wanderinstar
Gate Opener


Joined: 11 Dec 2011
Odometer: 44
Location: Barnoldswick,Lancs.



PostPosted: Sat Jan 21, 2012 12:10 pm    Post subject: Reply with quote

Whoops. I have put GL5 in both gearbox and transfer box. Think I may have made a bbbb. The bloke at the auto spares shop said that GL5 was better because it was Higher spec.
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mnl
Articulating


Joined: 10 Nov 2001
Odometer: 826
Location: West Midlands



PostPosted: Sat Jan 21, 2012 5:06 pm    Post subject: Reply with quote

You can google loads on this, but basically,

GL5 contains more extreme pressure additive, for use in differentials, and the first generation were high in sulphur that eats the zinc out of the brass bushes in a gearbox.

I doubt if this is the case nowadays, certainly the fully synthetic 75/90 I have here claims full compatibility with both GL4 and GL5.

GL4 is usually specified for gearboxes.
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jojo
Mud Obsessed


Joined: 11 Aug 2007
Odometer: 5255




PostPosted: Sat Jan 21, 2012 9:18 pm    Post subject: Reply with quote

Contact the Difflock shop. They will know and can look in the big book of lube and tell you which is right for your vehicle. They also sell very good quality oils so you can get your new oil from them and help support the forum.
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Ducky
Just got MTs


Joined: 14 Oct 2011
Odometer: 302




PostPosted: Sat Jan 21, 2012 9:30 pm    Post subject: Reply with quote

GL5 is basically a replacement for GL4, can use it no worries (I have it in diff/box etc on my truck. Smile
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Sporty II - 1997 Daihatsu Sportrak Limited
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Toseland
Mud Obsessed


Joined: 25 Oct 2011
Odometer: 3209
Location: cardiff


1999 Suzuki Vitara

PostPosted: Sun Apr 29, 2012 10:54 pm    Post subject: Reply with quote

please DONT use GL5 in your truck if it has "yellow metal" (brass) bushings.. you will end up with an extremely expensive bill for a rebuild of your box and all seals etc..

find out what is specified for your truck and use that.. simple

unless it states for use in GL4/GL5 applications, assume lots of damage will be done..

for a zook, this means GL4 in the gearbox (manual ofc) and GL5 in the axles, transfer box.

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I live by 2 sayings:
1. The beatings will continue until morale improves
2. Pain is just Weakness leaving the body..

The feeling you get when you first smash your shaft out, is one you will never forget.. especially if you do it in front of 10 guys.
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RichardD
Marshall


Joined: 13 Mar 2003
Odometer: 22856
Location: State of Confusion



PostPosted: Mon Apr 30, 2012 3:14 pm    Post subject: Reply with quote

wot they said

http://en.wikipedia.org/wiki/Gear_oil

Stick to what is specified .... Difflock Evo2 is GL4/5 compatible

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Poking the Grim Reaper with a stick then running away. The devil made me do it but God said it was okay with him.
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