Mega 75w-90 testing thread!

@HPL Plant Manager could you please provide the lab test results for the different viscosities of Gear Life so we can expand our knowledge base? Thanks!
Here is everything off the data sheet, which includes pour point and brookfield. I will look tomorrow and add the PDSC and wear results.

Screenshot 2024-11-18 at 3.54.27 PM.webp
 
Are these the Cold Climate versions? I was also curious about the non-cold Diff Life Brookfield result in the 75w90…and if there is a 75w110 in the non-cold version, what it’s Brookfield result is.
 
Right, but they have the PAO (CC version), and the more G3 non-CC version. That table he provided matches what I saw for the CC version (however I came up with it: a post by @Spedestrian ?). Spedestrian also showed a table for the non-CC, but it had no Brookfield or KRL info…so I thought maybe @HPL Plant Manager might be able to fill in the blanks.

Ford keeps insisting I use the 75w85, which leads me to think there is some need for thinner oil, but of course all the old-schoolers think I need 75w140. I will probably flip a coin between Severe Gear 75w90 and 75w110, unless HPL has another Black Friday sale, and somehow convinces me their non-CC 75w90, which kind of splits the difference in viscosity between the 2 Amsoil’s, is as good, and not way more expensive.
 
Right, but they have the PAO (CC version), and the more G3 non-CC version. That table he provided matches what I saw for the CC version (however I came up with it: a post by @Spedestrian ?). Spedestrian also showed a table for the non-CC, but it had no Brookfield or KRL info…so I thought maybe @HPL Plant Manager might be able to fill in the blanks.

Ford keeps insisting I use the 75w85, which leads me to think there is some need for thinner oil, but of course all the old-schoolers think I need 75w140. I will probably flip a coin between Severe Gear 75w90 and 75w110, unless HPL has another Black Friday sale, and somehow convinces me their non-CC 75w90, which kind of splits the difference in viscosity between the 2 Amsoil’s, is as good, and not way more expensive.
The cold climate version is noted as “CC” and has Group IV oils as the base.
We now only have one version of the Differential Life fluids - which were the cold climate versions prior. We no longer manufacture the "non" cold climate version as the cost to make those was surpassing the cost to make the cold climate version. Yes we will have another sale this year - will be a small business saturday and cyber monday sale.
 
We now only have one version of the Differential Life fluids - which were the cold climate versions prior. We no longer manufacture the "non" cold climate version as the cost to make those was surpassing the cost to make the cold climate version. Yes we will have another sale this year - will be a small business saturday and cyber monday sale.
Oh look, a product improvement that also reduced costs as well! Thank you @High Performance Lubricants team!
 
We now only have one version of the Differential Life fluids - which were the cold climate versions prior. We no longer manufacture the "non" cold climate version as the cost to make those was surpassing the cost to make the cold climate version. Yes we will have another sale this year - will be a small business saturday and cyber monday sale.
Thats unfortunate. The non-cold climate version had much better results in the wear test.
 
Yep, I'm going Amsoil for my next diff fluid change. It's interesting that Amsoil is actually a huge bargain compared to Motorcraft fluid.

And thanks to everyone that worked on putting this together for us.
 
As I've read through this long thread it seems that application is the most critical for decision making so I hope I'm descriptive enough without being too verbose: We have a 21' BMW X7 40i (B58) and they are known for a hot running front diff and transfer case failures. I'm currently trying to address the differentials to ensure longevity of those components. I replaced the fluid in the differentials at 29,812 miles (last November) and I'm sitting at 33,804. I replaced it with the spec'd BMW fluid, BMW G2 75W-85 for the front diff and BMW G3 70W-80 for the rear diff. However after reading through this and wanting to provide better wear protection, I was wondering if switching to Amsoil SG 75W-85 or 75W-90 for both front and rear would be a good idea. I have already ordered magnetic drain plugs for these and will be installing them, so I don't mind replacing relatively fresh fluid. I just want to make sure I'm not making some boneheaded move that will cause issues I'm trying to avoid.

The X7 is our family hauler, mostly short trips and no towing. Climate is Pittsburgh, PA so it ranges from 0°F to 100°F at worst. Again, just looking for longevity and to avoid some unforeseen compatibility issue when switching to an objectively great performing gear oil.
 
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