ZF Lifeguard 6 - FF - ZF 6HP19 - 120k miles

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You were wise to change the fluid and filter when you did. Particulates (from clutches and wear metals) build up over time and add to wear.

I will say one thing about this fluid, it held it's viscosity very well as do most LV fluids these days.

You can thank the new VII and anti-oxidant chemistry for this.
 
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