Oil Analysis Results - Transynd?

[RVBeagle]

I just received the fluid analysis report for our Allison 3000MH transmission. My goal with the analysis was to determine what service may be required. We bought our 2004 Itasca Meridian used with no service records. I have changed almost all the fluids and filters except the transmission. Given the cost of Transynd I was hoping to find no fluid change is necessary.

I have attached the analysis results in case any of you can confirm my understanding. First, it appears the fluid is in good condition and does not need to be changed. Contamination and metals levels appear low although I do not know the action thresholds. The particle counts look like the filters are doing their job (assuming a 30 micron filter). The viscosity is good and probably indicates the fluid is Transynd, at least I hope it does. There is a sticker near the dipstick that says "Use only Transynd" but that's no guarantee.

I have new filters on hand and a couple gallons of Transynd. I was planning on changing the filters as I have no idea how old they may be. Based on this report I think I will put the filters on the shelf and resample in another year.

John

2004 Itasca Meridian 39W CAT C7-350
2001 Dakota Quad Cab Toad

[docj]

It's my understanding that the key parameter for Transynd is the Total Acid Number which is around "1" for fresh fluid. I've been told that you are OK until the number is about "3" more than fresh fluid.

[Ray,IN]

His charts shows 0.81 acid number. Must be new fluid.

[hzjcm8]

Originally Posted by RVBeagle

I just received the fluid analysis report for our Allison 3000MH transmission. My goal with the analysis was to determine what service may be required. We bought our 2004 Itasca Meridian used with no service records. I have changed almost all the fluids and filters except the transmission. Given the cost of Transynd I was hoping to find no fluid change is necessary.

I have attached the analysis results in case any of you can confirm my understanding. First, it appears the fluid is in good condition and does not need to be changed. Contamination and metals levels appear low although I do not know the action thresholds. The particle counts look like the filters are doing their job (assuming a 30 micron filter). The viscosity is good and probably indicates the fluid is Transynd, at least I hope it does. There is a sticker near the dipstick that says "Use only Transynd" but that's no guarantee.

I have new filters on hand and a couple gallons of Transynd. I was planning on changing the filters as I have no idea how old they may be. Based on this report I think I will put the filters on the shelf and resample in another year.

John

2004 Itasca Meridian 39W CAT C7-350
2001 Dakota Quad Cab Toad

John,
It's TranSynd. Filters are good. No action required. Sample again next year.

[docj]

Originally Posted by hzjcm8

John,
It's TranSynd. Filters are good. No action required. Sample again next year.

Tom:

What parameters do you look at to determine that the filters don't need to be replaced? I'll be at the nominal filter replacement point next year (3 yrs) and would love to be able to skip it if the data supports doing so.

Joel

[hzjcm8]

Originally Posted by docj

Tom:

What parameters do you look at to determine that the filters don't need to be replaced? I'll be at the nominal filter replacement point next year (3 yrs) and would love to be able to skip it if the data supports doing so.

Joel

The filters are fine. The ISO Cleanliness Code shows that it's actually cleaner than Allison's factory fill fluid. I know because I wrote the factory fluid cleanliness spec. I'm also looking at additive values, 100C viscosity, TAN and the FTIR oxidation spike which is actually not oxidation; its actually showing the ester used for seal compatibility.

Hope that helps !!!

[docj]

If I do a winter-time fluid analysis with your lab like I usually do, can I get you to interpret the data to determine if I need to replace the filters during my spring service?

[hzjcm8]

Originally Posted by docj

If I do a winter-time fluid analysis with your lab like I usually do, can I get you to interpret the data to determine if I need to replace the filters during my spring service?

Yes !!