Rattling from primary
Intermediate
Joined: Jun 2007
Posts: 42
Likes: 12
If your re-read my post, once again, all I stated is a mechanic claims he has pulled a lot of blackened bearings out of transmissions running heavy weight gear lube.
75/90 is NOT heavy weight, its the same as 20/50.
But you are an example of what the mechanic claims, 140 gear lube is WAY over a 50 weight oil and it is his claim by using this wildly out of spec oil your bearings are running so hot they blacken.
Never mind the fact that gear lube is CORROSIVE and the product has to be made for a corrosive fluid to be used, clearly since HD does not recommend gear lube in a transmission they do not have it in mind. This corrosive gear lube can also blacken any yellow metals in the transmission.
(btw way, just discussing here)
75/90 is NOT heavy weight, its the same as 20/50.
But you are an example of what the mechanic claims, 140 gear lube is WAY over a 50 weight oil and it is his claim by using this wildly out of spec oil your bearings are running so hot they blacken.
Never mind the fact that gear lube is CORROSIVE and the product has to be made for a corrosive fluid to be used, clearly since HD does not recommend gear lube in a transmission they do not have it in mind. This corrosive gear lube can also blacken any yellow metals in the transmission.
(btw way, just discussing here)
Last edited by otterhigh2; Jul 30, 2017 at 02:50 PM.
Road Warrior
Joined: Sep 2014
Posts: 1,271
Likes: 246
From: Columbia SC
Whatever floats one boat, for me, there is a reason for everything and I trust the engineers for the product they manufacture.
Someone wants to run a an equal of a 70 weight gear lube in a transmission designed for a 50 weight motor oil, fine with me.
As far as your Shockproof, well, send it to a lab to find out the real viscosity, there has been some controversy about them defending their rating as a 90.
and last but not least as far as ... "this may send you over the fence"
Well, your certainly wrong about that.
)
Someone wants to run a an equal of a 70 weight gear lube in a transmission designed for a 50 weight motor oil, fine with me.
As far as your Shockproof, well, send it to a lab to find out the real viscosity, there has been some controversy about them defending their rating as a 90.
and last but not least as far as ... "this may send you over the fence"
Well, your certainly wrong about that.
)
Intermediate
Joined: Jun 2007
Posts: 42
Likes: 12
And that's what I've been driving at, blindly following what people who build a transmission to tell you what lube to use, all they're interested in is "is it safe, will it not hurt it ". if you want to know what will work best for any given application, maybe you should ask the people who develop the lubrication products. I could have just said that a long time ago but this was more fun. Listening to the manufacturer and accepting that as gospel is like believing the news....
Last edited by otterhigh2; Jul 31, 2017 at 09:13 AM.
Road Warrior
Joined: Sep 2014
Posts: 1,271
Likes: 246
From: Columbia SC
And that's what I've been driving at, blindly following what people who build a transmission to tell you what lube to use, all they're interested in is "is it safe, will it not hurt it ". if you want to know what will work best for any given application, maybe you should ask the people who develop the lubrication products. I could have just said that a long time ago but this was more fun. Listening to the manufacturer and accepting that as gospel is like believing the news....
It would be nice when people have issues they disclose what fluids their using!
But honestly I'm in the camp of the design more then the fluid...
Thread Starter
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Cruiser
Joined: Feb 2008
Posts: 179
Likes: 10
From: Mansfield, Ohio
Originally Posted by alarmdoug;16484639
It would be nice when people have issues they disclose what fluids their using!
But honestly I'm in the camp of the design more then the fluid...[/QUOTE
It would be nice when people have issues they disclose what fluids their using!
But honestly I'm in the camp of the design more then the fluid...[/QUOTE
Turned out it was a bad main shaft bearing. And before anyone tries to analyze what I did wrong, fluids were always changed before specified intervals. Redline fluids in transmission and primary last 2 yrs.
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