GQ drivetrain oils

Submitted: Thursday, Mar 03, 2005 at 17:43
ThreadID: 20938 Views:1919 Replies:5 FollowUps:7
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I am looking for suggestions on which oils or grades of oil to use in my GQ front diff, rear diff, transfer box and gearbox. The gearbox and transfer box still run quietly but the speedo shows 282000km and as I bought the truck second hand I presume that the boxes are the originals . Should I put a thicker oil in? and if so which brand and grade.
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Reply By: Wayne (NSW) - Thursday, Mar 03, 2005 at 18:25

Thursday, Mar 03, 2005 at 18:25
Willem,

Just had a look at the Shell web site and this is what they recommend

Diff 75/90
Transfer 75/90
Gear Box 80w/90

The reason that I use Shell oil is that I can get it just about everwhere, that way if I do have to do a top up or change I am not mixing oils.

I know that you have a GQ but in the 80Series they recommend a very light gear box oil.

Wayne
AnswerID: 100999

Follow Up By: Willem - Thursday, Mar 03, 2005 at 20:41

Thursday, Mar 03, 2005 at 20:41
Thanks Wayne
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Follow Up By: banjodog - Friday, Mar 04, 2005 at 18:05

Friday, Mar 04, 2005 at 18:05
Too true - easier to use products that are easily available.

Not specificly to the question but neverless a worthwhile read for some -

http://www.chris-longhurst.com/carbibles/index.html?menu.html&engineoil_bible.html
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Reply By: GOB & denny vic member - Thursday, Mar 03, 2005 at 18:57

Thursday, Mar 03, 2005 at 18:57
goodday willem
from the nissan patrol book for 1988-1997 patrols and ford replicas

1 thing always make sur rear diff is lsd oil
manual trans SAE 75W/90 GL4
auto MATIC D
transfer case SAE 75W/90 GL4
front diff SAE 80W/90 GL5
rear diff conventional & locking diffs SAE80W/90 GL5
LIMITED SLIP DIFF SAE LS80W/90 GL5
OR IN CONDIONS OVER 40c SAE LS140GL5

STEVE

PS DO WANT THIS BOOK AS I NOW HAVE THE GU
STEVE
AnswerID: 101005

Follow Up By: Willem - Thursday, Mar 03, 2005 at 20:39

Thursday, Mar 03, 2005 at 20:39
Interested in book will MM you
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Follow Up By: GOB & denny vic member - Thursday, Mar 03, 2005 at 20:53

Thursday, Mar 03, 2005 at 20:53
willem you are welcome to the book but i have just realised you have a diesel and the book is for petrol( theres some silly buggers around )if you still want it let me know

steve
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Reply By: ExplorOz Team - Kerry W (QLD) - Thursday, Mar 03, 2005 at 23:50

Thursday, Mar 03, 2005 at 23:50
Hi Willem,

The most useful oil for rear LSD is Penrites Limslip 140 (not 90/140) Do a search on the forum archives for why.

Also keep the gear oil light (as per specification)

This link will give you Penrites specs for GQ

http://www.penrite.com.au/nextpage.php?navlink=db%2Fvehiclewizard4.php&cid=10&make=NISSAN&category=fourwheeldrive&id=317&x=168&y=11

Otherwise any good quality oil brand will look after all the rest.

Cheers
Kerry W (Qld)
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AnswerID: 101057

Follow Up By: Willem - Friday, Mar 04, 2005 at 18:01

Friday, Mar 04, 2005 at 18:01
Thanks Kerry will look at the Penrite site.
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Reply By: fisho64 - Friday, Mar 04, 2005 at 04:32

Friday, Mar 04, 2005 at 04:32
best to use the spec that the manufacturer recomends, thicker oil is not necessarily better. Imagine an oil pump with a relief valve set at (say) 80psi which then pushes the oil down a gallery into a white metal bearing. Oil enters the gallery at 80 psi whatever viscosity it is. But then picture the difference between the viscosity of (say) milk and treacle. One is going to come out the other end of the gallery at (say) 70 psi the other at maybe half that or less. This is a simplistic analogy but oil specs are worked out due to many variables and noone knows better than the manufacturer what they are
AnswerID: 101069

Follow Up By: Willem - Friday, Mar 04, 2005 at 17:59

Friday, Mar 04, 2005 at 17:59
Thanks for your feedback. Much appreviated
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Reply By: fourstall2000 - Friday, Mar 04, 2005 at 08:41

Friday, Mar 04, 2005 at 08:41
It does not matter so much the brand but for the gearbox ensure it is GL-4.
If you use GL-5 which is more common you will have gearchange problems.
Regards
AnswerID: 101079

Follow Up By: Willem - Friday, Mar 04, 2005 at 18:02

Friday, Mar 04, 2005 at 18:02
Thanks mate. Appreciate your advice
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