Honda MTF UOA | 7200 mi | 03 Civic

[himemsys]

On 2/26/23 I had my manual transmission rebuilt (two bad bearings). In November of 2023 I had a UOA done that showed the typical high iron and silicon you see right after a rebuild. See here: https://bobistheoilguy.com/forums/threads/2003-civic-m-t-5763-mi.375976/

So now, a year later, I wanted to check the progress, and it's looking really good. Ignore the viscosity being flagged. That is due to me incorrectly IDing this fluid grade as SAE 75W90. I've since changed it to what it should be (SAE 75) and have asked for them to redo the report to reflect that.

I really need to do a VOA, as I believe Honda reformulated this fluid recently. It would also be nice to see virgin #s of the TAN and oxidation. But I probably won't be doing another UOA for at least 15k based on the numbers below.

 

[fantastic]

Sounds like the rebuild is working good and the report looks good. It shows you added 2 qts on sample #1?

 

[himemsys]

Sounds like the rebuild is working good and the report looks good. It shows you added 2 qts on sample #1?

Yeah I saw that too. Must be a mistake. Maybe I filled the wrong field when I submitted that sample.

 

[fantastic]

Yeah I saw that too. Must be a mistake. Maybe I filled the wrong field when I submitted that sample.

I recently sent off UOA for my John Deere and put on the slip I used Rotella 5w-40 but it was actually Super Tech 15w-40. 40 yrs is not being kind to me. Glad I'm not alone.

 

[MolaKule]

On 2/26/23 I had my manual transmission rebuilt (two bad bearings). In November of 2023 I had a UOA done that showed the typical high iron and silicon you see right after a rebuild. See here: https://bobistheoilguy.com/forums/threads/2003-civic-m-t-5763-mi.375976/

I really need to do a VOA, as I believe Honda reformulated this fluid recently. It would also be nice to see virgin #s of the TAN and oxidation. But I probably won't be doing another UOA for at least 15k based on the numbers below.

Comparing a UOA against a VOA is good practice.

Use trending, that is, watch what happens to the various metal elements. Snapshots tell us little.

See the first list of lubricants in this list as they apply to these LV MTF fluids:

Thread 'Updated List of MTFs'

May 30, 2024

Updated List of Manual Transmission Fluids Updated May 30th, 2025

NOTE: This list is only a “summary” list of MTFs available in the MTF Lubricant Market and only available in US auto parts stores and US Import outlets. It is not an endorsement nor a critique of any one fluid, nor is it implied that any one fluid will cure problems in MTs that have design problems or those that have excessive wear. Viscosities listed are at 100C and rounded up.

A.These MTL fluids are closest to a Kinematic Viscosity of 6.X cSt@100C (About the same viscosity as Dexron VI ATF) LV MTF's:

1. HPL Manual...

• MolaKule
• Replies: 0
• Forum: ATF, Differential, Trans, Brakes, P/S

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[himemsys]

Comparing a UOA against a VOA is good practice

I did a VOA for this oil in January 2022. It looks very similar to my recent UOAs, but the TAN is over 3, which leads me to believe there was a reformulation since my used TANs are now around 2. Hence, my comment about really needing to redo the VOA.

 

[himemsys]

Here is the VOA from 2022:

H

Thread 'Genuine Honda MTF VOA with TAN'

Jan 24, 2022

• himemsys

•