Before you take your Grenadier's pan off, confirm the new aluminum pan has the 2nd transmission fluid uptake port. Most ZF pans have one large uptake port as part of the filter, Grenadier's use a ZF pan with a second, smaller uptake port similar or identical to the BMW G20/G21s (this pan's setup is for BMW "mild hybrids") if I recall correctly, also part of the filter. The attached picture shows a Grenadier's ZF pan with the second port at the top left. I'll post more when I have time and have better understanding about what the 2nd port does -- it's either there because we have the engine stop/start feature and this 2nd port is to help keep the ZF ready to go in those cases and/or some other reason(s). I haven't found a metal / aluminum ZF pan that has a filter with this 2nd port, and I'm not sure if I can grab the filter with the 2nd port and retrofit to an aluminum pan without the backing mount behind that 2nd port on the pan's floor. If anyone has done this, please post.
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