Rearend chattering
Thread Starter
|
4wd Low
Joined: Dec 2019
Posts: 10
Likes: 0
Rearend chattering
I have a 2005 fx4 it has 975 axle with373 gear. The rearend is chattering. I had my mechanic put new clutches put in with fulll synthetic 75w-90 and 12ozs of anti-friction. And it is still chattering he is lost as to why it is still chattering. What did he miss or not getting. He has done alot of ford rearends and have not had this problem. Please help
Transmission Rebuilder
Joined: Jul 2008
Posts: 1,569
Likes: 62
From: North Georgia
We have had to add a extra bottle of friction modifier to stop a few from chattering, also when we build them we soak the clutches in the friction modifier before installation to try to prevent this.
Junior User
Joined: Jul 2021
Posts: 75
Likes: 42
From: San Fernando Valley
Back in the day there was a small bottle of additive.
It was "Refined Sperm Whale Oil"
So,.... it became no more at one point many, many, years ago.
The shout went out for a replacement. Much money was spent, much testing took place.
The winner was "Jojoba".
A concentrated formula of Jojoba oil serves as a very wholesome replacement for sperm whale oil.
Whale Oil: Biobased and Bygone
The primary use for whale oil was as an illuminating oil. Good quality sperm whale oil was light in color, low in odor and burned brightly without a great deal of smoke. Other uses were as a clock or watch oil. A problem for ships at sea was the fact that the sea air caused corrosion in ships clocks. The clocks would stop and with that navigational accuracy was lost. Sperm whale oil resisted oxidation and its viscosity was relatively uniform over the range of temperatures encountered. In addition, it was a good corrosion prevention agent. The oil from the head and jaw never seemed to congeal, even at subzero temperatures – a highly useful property.
In addition to clock and watch oil, other uses for sperm whale oil included sewing machine oil, spindle oil and loom oil – important for the Norths textile mills – as well as other applications requiring a low viscosity, light colored and stable oil with good lubricating characteristics.
As petroleum products began to replace whale oil for lubrication, the special properties of sperm whale oil became valued as an additive component. Used as an additive in light petroleum oils, whale oil made an excellent low-friction lubricant. When whale oil was reacted with sulfur (10 percent by weight), a relatively low viscosity, noncorrosive, extreme pressure agent was produced. Sulfurized sperm oil has been used in gear oils, greases, automatic transmission fluids, and as an antiwear agent in engine oils. It has also been used in metalworking fluids. There were also phosphosulfurized additives made from sperm whale oil which were used in hypoid gear oil formulations with great success.The final blow to the sperm whale oil business, at least in the United States, came in 1970 when the importation of whale oil or any other part of the whale was outlawed due to animal conservation activism. It was no longer possible to use sperm whale oil or derivatives in any product manufactured or imported into the United States. By then, the sperm whale population had been diminished by about two-thirds, from its early-1880s population of more than a million.
The ban on whale oil set off a flurry of research activity to find substitutes. Sperm whale oil differs from mineral oil in that it is a fatty ester. That chemical structure is what gives sperm whale oil its unique properties.
Many products were tried as substitutes. Among them were products such as lard oil and tallow, which are triglycerides. While these have gained a place in the product lineup, they didnt do quite the same job. Some of the other products tried included methyl esters of fatty acids, such as methyl oleate. Again, these had a place but didnt measure up to sperm whale oil. The search then expanded into the area of plant chemistry, looking for a product which had the chemistry of sperm whale oil.
One candidate was from an unlikely plant that grows wild in the southwestern United States, the jojoba plant. Jojoba oil is an ester similar to sperm whale oil, with most if not all of the same properties. There was just one problem: It was not cultivated at the time and one jojoba shrub didn't produce anything like a whale, volume-wise. There was a concerted effort to grow jojoba on a commercial scale so that it would replace sperm whale oil, but that never really happened (although it still could, given the renewed interest in industrial uses for seed oils). Growth has been sufficient however for jojoba to become a highly prized and highly priced ingredient in cosmetic and personal care products such as hand cremes, shampoos and makeup.
https://www.lubesngreases.com/magazine/whale-oil-biobased-and-bygone/
https://www.sciencedirect.com/topics/agricultural-and-biological-sciences/jojoba-oil
So my brain is still back in 1976
But a search may turn up a Jojoba based differential lube additive.
Thread
Thread Starter
Forum
Replies
Last Post
bigcountry1009
1999 - 2016 Super Duty
8
Oct 24, 2014 07:59 PM
steve(ill)
Explorer, Sport Trac, Mountaineer & Aviator
2
Nov 13, 2006 05:06 PM
