How do you change diff oil?

Submitted: Saturday, Jan 10, 2004 at 07:04
ThreadID: 9630 Views:4084 Replies:11 FollowUps:7
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Looking throught the archives I now know how to fix the shudder in the diff of the patrol. Change the diff oil. I can see how to get it out but how do you get it back in and how much? I see there is another bung about two thirds of the way up the side of the diff, don't tell me you have to pour it in there!

What is the absolute best oil for Patrol LSD diff? I am going to do both diffs, gearbox and transfer case while I'm under there

Cheers Jim
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Reply By: Member - Ross - Saturday, Jan 10, 2004 at 08:18

Saturday, Jan 10, 2004 at 08:18
Jim

That's the go, the diff should be full up to the level of the top bung. You'll need one of those oil syringe gizmos ... or a length of plastic tube on a funnel, if you can stand there all day waiting for the oil to find it's way through.

CheersFidei defensor

Rosco
AnswerID: 42441

Reply By: colin - Saturday, Jan 10, 2004 at 08:40

Saturday, Jan 10, 2004 at 08:40
Hi Jimmy, i use penrite LSD oil as advised by a diff specialist. I also found it cheaper and easier to get the diff man to do it as the oil is very exy. It cost me about $120 to do both diffs and gearbox and transfer all with penrite, i was also told to change the LSD oil every 20000 ks as it is a self depleting oil. Col
AnswerID: 42445

Reply By: David N. - Saturday, Jan 10, 2004 at 08:48

Saturday, Jan 10, 2004 at 08:48
I also use Penrite LSD oil, but get a lot more than 20k out of it without problems.
I do the front diff far less often as it does a lot less work than the rear, and is not LSD.
AnswerID: 42447

Follow Up By: David N. - Saturday, Jan 10, 2004 at 08:51

Saturday, Jan 10, 2004 at 08:51
Also...
for the gearbox, I would highly recommend using fully synthetic. Much better changes when cold AND hot. I haven't done mine yet but will be next time as I've driven a couple with synthetics in and there's a definite improvement.
Cheers
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Follow Up By: Jimmy - Saturday, Jan 10, 2004 at 10:17

Saturday, Jan 10, 2004 at 10:17
Thanks for the info chaps.

Rowler i don't know what happened to your post but is was emailed to me, Good luck with yours

I want to put it through its paces this weekend so I am going to have to do it myself as ther is no way I could wait another week :)

Any Idea as to how much oil is required for each diff?

Jim
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Follow Up By: David N. - Saturday, Jan 10, 2004 at 12:22

Saturday, Jan 10, 2004 at 12:22
Qantity SHOULD be in your owners manual.
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Reply By: Rick Blaine - Saturday, Jan 10, 2004 at 12:11

Saturday, Jan 10, 2004 at 12:11
Irrespective of what oil you use I found that the simplest way to do it was with one of these pumps that goes in a drill... with plastic hose either end... job done in about 3 minutes.
AnswerID: 42476

Reply By: glenno - Saturday, Jan 10, 2004 at 13:19

Saturday, Jan 10, 2004 at 13:19
i bought from a car accessory place a (tom thumb all purpose utility pump) it is a 1 litre plastic bottle with a pump that you push down on the top and on the end of the clear plastic hose there is a s shaped aluminium pipe that you hook into the fill hole . cost me about $20 . or alternatively my father just put some clear plastic hose into the top of a soft drink bottle cap , siliconed it in place and he just squeezes the soft drink bottle to get it in . (you have to think of ways to do things without spending money when you are a pensioner) .
AnswerID: 42480

Follow Up By: goingplatinumcomau - Saturday, Jan 10, 2004 at 15:15

Saturday, Jan 10, 2004 at 15:15
I put 2 tins of STP in a diff once ......................sat it in the sun for half a day it was real hot .................the funnel and plastic tube .........same a drink bottle ..................i made a claamp and filled the empty drink bottle container ..........it was in in about 5 minits ..........So the trick is get it hot first.

Regards Shane
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Reply By: Truckster (Vic) - Saturday, Jan 10, 2004 at 21:19

Saturday, Jan 10, 2004 at 21:19
As others have said Pentrite..

U went to Mobil servo bought one of their 500ml bottle of diff oil with the hose on the nozzle, and MT'ed the oil out of it first, filled bottle with Penrite, and used that, took 10 mins, the stuff is like Molassis...
AnswerID: 42513

Reply By: Stuart - Saturday, Jan 10, 2004 at 22:58

Saturday, Jan 10, 2004 at 22:58
Just a quick tip that will save you a lot of trouble and cursing, make sure you can undo the filler before you undo the drain plug, simple but done the other way can turn into a nightmare!
AnswerID: 42524

Follow Up By: Coops (Pilbara) - Wednesday, Jan 14, 2004 at 09:27

Wednesday, Jan 14, 2004 at 09:27
found this out the hard way.
Any idea as to why this is?
Is it pressure ?
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Follow Up By: Stuart - Wednesday, Jan 14, 2004 at 19:28

Wednesday, Jan 14, 2004 at 19:28
could be, but l would put it down to "Murphy's Law" - whatever can go wrong will go wrong!!!!!!!!!!!!!!!!!
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FollowupID: 305278

Reply By: Tuddy - Saturday, Jan 10, 2004 at 23:06

Saturday, Jan 10, 2004 at 23:06
Jimmy,
For the best oil for your patrol go to www.bimlube.com.au
As for how to get the oil in , find yourself a sink pump from a caravan. It works real good.
Tuddy 03 87423600
AnswerID: 42526

Reply By: Jimmy - Sunday, Jan 11, 2004 at 10:31

Sunday, Jan 11, 2004 at 10:31
Thanks foe all the advise guys.. Looks like penrites the go and all I have to do is decide which method to use to get the stuff in there.

Good advise to take the top bung out first. That had crossed my mind as there is always one.....
AnswerID: 42559

Reply By: crowie - Sunday, Jan 11, 2004 at 14:15

Sunday, Jan 11, 2004 at 14:15
Interesting how word of mouth leads people to a certain brand of boutique brands of lubricants. Penrite is a very small oil company with very limited resourses, probably producing a reasonable product and with some good PR. But like boutique beer; is it really any better than the large esstablished who pour billions of dollars each year into R&D.

I'd bet that Penrite spends miniscule amounts on product development and research compared with the large oil companies. Unless they have an in, or are secretly owned by one of the larger companies I don't know how their products can possibly equate to those those produced by the larger global oil companies.

I don't use Penrite because I know they cannot produce a product as good as the big fellas. If they did they would be bought out. Im not saying there is anything wrong with Penrite it but I choose products produced by a very large fuel and lubricant companies that spend billions each year on research and development. Their products are used extensively in aviation, farming, and heavy industry around the world. They can't afford to be wrong or get a bad reputation.

I won't say which one to use because you can make your own choices amongst several. Don't get suckered into boutique brands simply because they are a boutique brand. Thats a marketing ploy in itself. It doesn't make their product any better. They can't really complete with the big fellas. Penrite is not exactly that cheap either and that still doesn't make it any better.
AnswerID: 42583

Follow Up By: colin - Tuesday, Jan 13, 2004 at 18:13

Tuesday, Jan 13, 2004 at 18:13
Hi Crowie, i use Penrite on the advice of a specialist diff mechanic, thats all he does and its from his experience of repairing and seeing the difference of running different oils as to the damage that occurs from different oils that i made my choice, just the same as i can run my diesal moter on a certain large oil companies oil my motor uses oil, so i use a lesser known brand and no oil consumption, have done close to 300000ks and the motor has never been touched. Col
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FollowupID: 305155

Reply By: Moose - Monday, Jan 12, 2004 at 14:44

Monday, Jan 12, 2004 at 14:44
You should go to somewhere like Super Cheap and get one of the pumps that can screw onto the oil container. They make it quite easy. May have to extend the length of the hose as it's bloody difficult whilst lying under the vehicle.
AnswerID: 42670

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