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Old 10-28-2022, 04:50 PM   #1
LunarLight's Avatar
Join Date: Jan 2019
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Diesel Consultants for Fluid Analysis Review?

I just received fluid analysis information on a coach we want to buy. We had the oil and coolant tested for the generator and engine. We also had the transmission fluid tested. The oil tests came back great but the coolant and transmission tests are showing some abnormalities.

I would like to hire someone to review the data with me so I can understand it. If itís just a matter of replacing fluids, great, but I donít want to overlook the potential for $14k radiator replacement. Are there such consultants available? We have a great diesel shop here but they arenít open on the weekend and Iím not wanting to keep the seller waiting.

The coach is a 2004 Monaco Executive with the Cummins ISM 500 engine and Allison 4000 transmission.

Thanks for any insight!
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Old 10-28-2022, 04:56 PM   #2
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Nothing to loose by posting the results here.

There are some with chemical backgrounds here.

And, many with a lot of experience with DP's.

And, it is FREE.
Brett Wolfe
Ex: 2003 Alpine 38FDDS. Ex: 1997 Safari Sahara. Ex: 1993 Foretravel U240
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Old 10-28-2022, 05:01 PM   #3
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If the radiator is not wet on the bottom it's good.
Maybe a hose leak, it's being an 04. I would look forward to replacing all the hoses anyway. And you already know that you are going to replace all the fluids, just so YOU KNOW they are right. Most every new owner does that. Right?

Mike in Colorado
2004 Fleetwood Pace Arrow 37c, 8.1 gasser, (Jezebel) Ultra RV ECM / TCM and rear track bar, PPE deep Tx pan, Bilstein's, Sailun's & Sumo's all round, pushed by a 2002 Grand Caravan, on a Master Tow Dolly.
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Old 10-29-2022, 06:04 PM   #4
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What readings are you concerned with? What lab did the testing? You said " transmission tests are showing some abnormalities." What are they and when was the fluid and filters changed last?
Ok, just so you know I ran a oil analysis lab when I was in the AF.
The radiator probably just needs a good flush and refill if it isn't leaking.
What many don't understand about oil analisis is it is basically tread analisis. If you have just one sample that is a snapshot of "right now".

2008 Newmar Mountain Aire
450 HP Cummins ISM 4000MH Allison Trans.
Towing a 2014 Honda CRV with a Blue Ox tow bar.
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diesel, fluid, view

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