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Author Topic: What kind of fluid in Rockweel axles  (Read 1357 times)
crawler nut
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« on: September 16, 2012, 04:07:47 PM »

Like the title says. Just finished my rig. An need to fill the diffs. What do you guys recommend? Thanks
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halcat
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« Reply #1 on: September 16, 2012, 05:31:25 PM »

Mine looks like chocolate milk
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crawler nut
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« Reply #2 on: September 16, 2012, 06:31:44 PM »

Mine looks like chocolate milk
Thats cool, but what did you out in it before it turned to chocolate milk?
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YOUNG
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« Reply #3 on: September 16, 2012, 07:07:37 PM »

We always ran either standard hydraulic oil, automatic transmission fluid or even 5w 30 motor oil.  With the rocks alreadt robbing so much power a thinner oil will allow you to spin the thirds easier. 
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TBItoy
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« Reply #4 on: September 16, 2012, 07:18:14 PM »

 Lips Sealed
We always ran either standard hydraulic oil, automatic transmission fluid or even 5w 30 motor oil.  With the rocks alreadt robbing so much power a thinner oil will allow you to spin the thirds easier. 


X2

I'd run a all purpose tractor fluid.
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Nick Cooper - Cookeville, TN

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crawler nut
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« Reply #5 on: September 17, 2012, 04:25:12 AM »

Thanks guys ill try it.
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NTIDWELL
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« Reply #6 on: September 17, 2012, 12:48:20 PM »

I run 85/140w really doubt ur gonna notice the heavier oil drag down ur engine
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TBItoy
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« Reply #7 on: September 17, 2012, 01:01:02 PM »

I run 85/140w really doubt ur gonna notice the heavier oil drag down ur engine

The heavier oil will protect against shock loading/heavy loading better than the lighter oil, but when you are spinning 2x the amount of gears and bearings (not to mention the size of the bearings) you are generating some significant parasitic loss.

Rock crawlers have a TON of parasitic loss to begin with, anything you can do to help is a plus IMO.
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Nick Cooper - Cookeville, TN

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NTIDWELL
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« Reply #8 on: September 17, 2012, 01:17:52 PM »

The heavier oil will protect against shock loading/heavy loading better than the lighter oil, but when you are spinning 2x the amount of gears and bearings (not to mention the size of the bearings) you are generating some significant parasitic loss.

Rock crawlers have a TON of parasitic loss to begin with, anything you can do to help is a plus IMO.
So ur saying if I run lighter oil I'll be faster or will I just save mpgs    molaugh I could see running a lighter oil in the winter doubt if I ever will seen a deal on pirate bout all that and shaven gears and so on if ur gonna run rocks just throw more motor at it then u might be able to notice the difference instead of what oil u run in them giving u more power
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patooyee
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« Reply #9 on: September 17, 2012, 01:34:05 PM »

So ur saying if I run lighter oil I'll be faster or will I just save mpgs    molaugh I could see running a lighter oil in the winter doubt if I ever will seen a deal on pirate bout all that and shaven gears and so on if ur gonna run rocks just throw more motor at it then u might be able to notice the difference instead of what oil u run in them giving u more power

You just bitch-slapped the English language but I agree with you ... I think.

I run either 80w90 or 85w140, whatever I have laying around.  To be honest the rockwell is so tough you could probably fill it with concrete and be alright.  You wouldn't get very good mileage though.  spin
« Last Edit: September 17, 2012, 01:35:37 PM by patooyee » Logged

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yankster
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« Reply #10 on: September 17, 2012, 03:28:40 PM »

  To be honest the rockwell is so tough you could probably fill it with concrete and be alright.  You wouldn't get very good mileage though.  spin
You just bitch-slapped the English language but I agree with you ... I think.

I run either 80w90 or 85w140, whatever I have laying around.  To be honest the rockwell is so tough you could probably fill it with concrete and be alright.  You wouldn't get very good mileage though.  spin
This exactly!  My first set ran 50-50 gear oil and creek water.
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patooyee
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« Reply #11 on: September 17, 2012, 04:37:51 PM »

This exactly!  My first set ran 50-50 gear oil and creek water.

Did you feel that the creek water reduced parasitic loss?  Was there a before and after difference?
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halcat
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« Reply #12 on: September 17, 2012, 07:09:02 PM »

Just like I told you, run chocolate milk. Everything will be all right.
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B3
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« Reply #13 on: September 18, 2012, 05:49:07 PM »

jus run them empty :driving: .... then they wont leak :shit:
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TBItoy
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« Reply #14 on: September 18, 2012, 08:31:46 PM »

I dunno, I'm just a lubrication engineer  dunno
(no shit, I really am, work for JAX INC)

There is nothing "wrong" with running a 140 weight gear oil, I just don't feel that the heavier viscosity is necessary given the design of a 2.5 Rockwell in a rock crawler.
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Nick Cooper - Cookeville, TN

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fordcontraption01
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« Reply #15 on: September 19, 2012, 05:35:57 AM »

jus run them empty :driving: .... then they wont leak :shit:
thats what ends up happening to mine i dont even check the oil in them anymore  :shit:
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tuckin20

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« Reply #16 on: September 20, 2012, 12:53:59 PM »

jus run them empty :driving: .... then they wont leak :shit:

Rockwells don't leak!!! :shit:
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B3
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« Reply #17 on: September 20, 2012, 02:41:22 PM »

Rockwells don't leak!!! :shit:
not after there empty . hell i got a picture of a rockwell with a drip pan under it  :shit:
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patooyee
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« Reply #18 on: September 20, 2012, 04:46:43 PM »

If they made a drip pan big enough to catch everything coming off of my buggy they would call it a drip POOL.
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YOUNG
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« Reply #19 on: September 28, 2012, 06:54:23 PM »

With the double reduction and the size of the bearings in these axles any time you can spin it easier is a plus.  Also with the size of the bearings our sport doesn't put any wear on them.  Its shocking to see how much easier they spin when you run the ATF fluid or standard thin weight hydraulic fluid.  The thick gear oil is a waste in these axles for trail use. 
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Donutfj80

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« Reply #20 on: September 29, 2012, 08:31:10 AM »

What? No one uses backwoodsgoop in rockwells? molaugh
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tuckin20

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« Reply #21 on: October 03, 2012, 03:17:23 AM »

Quote from: yankster
This exactly!  My first set ran 50-50 gear oil and creek water.

This prolly what is in mine!
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