Hopefully I can answer. However your best place for this discussion would be in the Allison Owners thread. There is a long discussion on fluid testing the Allison Transmissions with a retired Allisons fluids engineer. He is also with JG Lubricants that sells test kits and pumps. Here is a picture of the type of pump I use.
One trick is to cut the tip of the sample poly tube on the bias before inserting in the dipstick tube to draw up your sample. Good luck.
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Jeff/Diane, Retired Fire Capt. I.Y.A.O.Y.A.S.
2004 Winnebago Journey 39K on a Workhorse chassis w/ ISC 330, Allison 3000
2013 Honda Fit with Roadmaster Baseplate, BrakeMaster and All Terrain Falcon Tow Bar.
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