What differnetal lubes to use ?
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Junior User
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What differnetal lubes to use ?
I have a 93 Bronco axle code H9.
First is this a limited slip or not? front/rear?
Do I have to buy front, rear and transfer oils from Ford? Seems the manual calls out differnt oil for each.
What is recomended where? Thanks
First is this a limited slip or not? front/rear?
Do I have to buy front, rear and transfer oils from Ford? Seems the manual calls out differnt oil for each.
What is recomended where? Thanks
Posting Guru
Joined: Jan 2001
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From: Nebraska
What differnetal lubes to use ?
H9=3.55 limited slip
80W90 gear oil should work for both the front and rear, along with the additive for limited slips. ATF goes in the t-case and transmission (auto or 5 speed).
80W90 gear oil should work for both the front and rear, along with the additive for limited slips. ATF goes in the t-case and transmission (auto or 5 speed).
Senior User
Joined: Mar 2002
Posts: 100
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From: Orange Park US
What differnetal lubes to use ?
Below is a link for Mobil 1 synthetic gear oil which I use in my 8.8 rearend. It has a product data sheet if you're interested in looking here.
http://www.mobil1.com/index.jsp
Bronco894x4
http://www.mobil1.com/index.jsp
Bronco894x4
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What differnetal lubes to use ?
Thanks for the info, would H9 be limited slip for fornt & rear axle?
Is limited slip better or worse for heavy towing?
When I pull my 7000 pound boat out of the water at the ramp is it okay to pull this type of load if four wheel low?
Is limited slip better or worse for heavy towing?
When I pull my 7000 pound boat out of the water at the ramp is it okay to pull this type of load if four wheel low?
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Joined: Mar 2002
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From: Orange Park US
What differnetal lubes to use ?
I don't have the answer to that one. 7000 pounds is pretty heavy. My last boat I had was about 5000 pounds with trailer and I know what kind of chore it was to pull it out of the water. I had to pull it up the ramp in low range also.
Bronco894x4
Bronco894x4
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What differnetal lubes to use ?
When checking transfer case, opened top plug, everything cold, lvel ground, fluid came rushing out, thought it should only be full to plug hole ????
93 XLT 5.8L Stock 110k miles
93 XLT 5.8L Stock 110k miles
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From: Southeast FLA
What differnetal lubes to use ?
[updated:LAST EDITED ON 03-Jun-02 AT 12:47 PM (EST)]Remember that when your truck is on a lift, the rear axle (and probably the front one, too) pivots down at an angle (rotating it something like, oh, about 1 to maybe 3 degrees from the nearly level angle it sits at when the vehicle is on the ground). At this angle it is at a position where a shop could fill the differential up to the hole and replace the plug. When brought back down off of the lift the rear end rotates, or pivots, forward again thus making the fluid level come up over the fill hole (which is now plugged by the plug).
Also, just let me add that, recently, the single greatest improvement I've done to my truck was to change out the differential fluid, clean it out thoroughly, and replace it with Mobil 1 synthetic 75W-90. Yeah, I know I shouldn't have seen much of an improvement, but it really is noticeable with the inline-6, M5OD and constant highway speeds without a cruise control. (my post on it is at the bottom of:
https://www.ford-trucks.com/dcforum/DCForumID9/1566.html )
Also, just let me add that, recently, the single greatest improvement I've done to my truck was to change out the differential fluid, clean it out thoroughly, and replace it with Mobil 1 synthetic 75W-90. Yeah, I know I shouldn't have seen much of an improvement, but it really is noticeable with the inline-6, M5OD and constant highway speeds without a cruise control. (my post on it is at the bottom of:
https://www.ford-trucks.com/dcforum/DCForumID9/1566.html )
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From: Southeast FLA
What differnetal lubes to use ?
[updated:LAST EDITED ON 03-Jun-02 AT 02:16 PM (EST)]bmark, Pull the cover and most of the fluid will come out. Clean the cover and the differential surfaces well, and replace the gasket with a new one. Evenly snug up the bolts. Fill it up via the mid-level fill plug.
Is that what you were looking for?
Is that what you were looking for?
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Junior User
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What differnetal lubes to use ?
Yep, that works for the rear, is there a plate for the front, I don't recall, is there any need for gasket cemment as well as the gasket?
93 XLT 5.8L Stock 110k miles
93 XLT 5.8L Stock 110k miles
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Joined: Feb 2002
Posts: 208
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From: Stockton USA
What differnetal lubes to use ?
The front unit is a real bitch to unbolt for a fluid change...best whay is to suck all the old fluid out through the 'fill' hole.
I changed all the other fluids myself, but went to the local Jiffy-Lube and had them suck out the old stuff in the front axle. I asked the guy to really give it a chance to suck out - and move the suck-tube around alot to get out all they could. Cost me $10.
I also changed the auto tranny fluid and filter. You have to drop the tranny pan to do all this. Clean up any residue inside the pan carefully. It's best to use a lint-free rag so you don't run the chance of adding any fuzzy stuff to the interior of the tranny.
It's best to also drain the torque converter at the same time. rotate the engine slowly by 'clicking' the starter in bursts till you can see the small 1/8 inch drain plug in the TQ through the access hole. Drain the TQ then reinstall the plug. It takes a bunch of fluid to fill everything back up - check your manual. You have to idle the engine to get the TQ filled up, then add more fluid till it's back up to 'full'.
Good luck.
I changed all the other fluids myself, but went to the local Jiffy-Lube and had them suck out the old stuff in the front axle. I asked the guy to really give it a chance to suck out - and move the suck-tube around alot to get out all they could. Cost me $10.
I also changed the auto tranny fluid and filter. You have to drop the tranny pan to do all this. Clean up any residue inside the pan carefully. It's best to use a lint-free rag so you don't run the chance of adding any fuzzy stuff to the interior of the tranny.
It's best to also drain the torque converter at the same time. rotate the engine slowly by 'clicking' the starter in bursts till you can see the small 1/8 inch drain plug in the TQ through the access hole. Drain the TQ then reinstall the plug. It takes a bunch of fluid to fill everything back up - check your manual. You have to idle the engine to get the TQ filled up, then add more fluid till it's back up to 'full'.
Good luck.
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Joined: Jul 2002
Posts: 53
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From: New Orleans USA
What differnetal lubes to use ?
When I changed the fluid in my AOD last summer, I thought that the TQ should be emptied, but could not find anything in my Haynes manual to show if there was a drain plug for this. Where exactly is the port you had to turn the engine over till the plug appeared?
Thanks
Paul
Thanks
Paul