ZF6 fluid (Mobil1?)

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Feb 6, 2008 | 05:17 PM

carlsson

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Mountain Pass

Joined: Oct 2005

Posts: 146

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ZF6 fluid (Mobil1?)

I have seen in posts here several recommendations for using Mobil1 Synthetic ATF for the 6 speed. I went shopping for it, and all the local stores- Walmart, Pep Boys, Autozone only had Mobil1 synthetic MerconV. The NAPA and Advance also had no synthetic Mercon. The 2000 owners manual says to use a conventional Mercon (not MerconV) and specifically states to not use MerconV or Mercon/MerconV fluids in the automatics that specify Mercon. It states to use synthetic mercon for the ZF5. The dealer wants over $22 a quart for the synthetic Mercon for the ZF5. A local manual trans. rebuilder advised that I use any synthetic ATF whether Mercon or not. I wanted to make sure before I change to MerconV. Any advice?

Feb 6, 2008 | 08:19 PM

F350-6

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Joined: Mar 2007

Posts: 26,966

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From: Texas

I've just used the regular stuff every 50k or so with no issues. It still looks clean every change. I'll be due for another change in a couple of months so I'll pass on the $22/qt.