RodneyWright wrote:
Chad Culbertson wrote:
Is this stuff really that great? Seems like a lot of work for diff lube. I don't think i've ever heard of a fluid magically making a noisy diff quieter.
I'm chasing this down at the suggestion of Dave Davis. He said this was used on MB cars that had notoriously noisy rear diff. I put this in my 525 touring and it helped some, but ultimate problem on the BMW was a bad wheel bearing. Ever since I had the torsen diff installed on the mustang, it's been somewhat noisy. East Coast gears said they could make most gears sets quite, but cautioned it would tough on the 3.73 gears. I think it's a pretty common complaint.
I think I've got a lead on some of this. Watching this youtube video sort of sold me on this stuff, it sticks to everything gear-wise...
https://www.youtube.com/watch?v=Qzirt1VzmlsI really hesitate to post this because I sound like a Debbie downer who wants to do nothing more than rain on your parade.
But that is not my goal.
Regardless...
That's a good
looking demo. I am not an lubrication engineer, but I also remember something that I learned while rebuilding Porsche transmissions. This may be anecdotal info, but I had been told that if you put in place an oil pump with squirters to lubricate specific parts of the transmission that you should NOT squirt directly into the mesh of the ring and pinion gear. Basically there is such thing as having too much oil in one place. In the Porsche scenario it actually caused problems with proper gear mesh as it pushed the gears apart (even if that is hard to believe) and causing bearing issues. Instead squirt just elsewhere, but not direction into the mesh. And as much as anything, the oil was acting to pull heat out and not as much about lubrication (pump ran fluid through external cooler).
My experience has been with Porsche transmissions (and integrated differentials) and these are in transmissions that are both raced by Porsche plus regular owners for decades. I generally trust the engineers got it right in the initial design and what lubricant they specified. Now for stuff that is more street oriented, maybe the engineers didn't get it right if the owner is using it for competition, etc. So maybe something different is required.
But using products that were not initially intended by the designers means you end up taking responsibility for part of the "new design" you have created. Which implies you actually know what you (meaning really the global "we" and not you specifically Rodney) are doing. That video for example. It "looks" impressive. What does it really mean? Someone could just as equally relabel that video to point out that their product doesn't get sucked up in mass quantities and ruin efficiency. That their product is providing the required level of lubrication without creating excess drag (note, I made that up without any knowledge of it being accurate or not!) Granted, you have a third party expert who is recommending this stuff.
With all that being said. I have no doubt that LE makes an excellent product and is probably better than mainstream lubricants. My question is if you are really getting much if any benefit out of it. Sort of like running higher octane gas in cars that can't take advantage of it.
Richard
_________________
Richard Casto
1972 Porsche 914
2013 Honda Fit Sport
2015 Honda Fit EX
http://motorsport.zyyz.comMoney can't buy happiness, but somehow it's more comfortable to cry in a Porsche than a Kia.
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