I got the CAT fluid at a Caterpillar tractor dealer. You might call one where you are just to make sure they have it in stock, and it would be in their parts department. It will be Caterpillar Hydraulic Oil Additive 1U-9891.
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Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
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