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2003 ZO6
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Discussion Starter · #1 ·
Good morning all, I have found tons of conflicting information about current fluids to be used in manual transmission and differential for 2003 Z06.

The manual is clear to use Dextron 111 for the transmission however it appears others are using different fluids. Amazon carries "ACDelco Gold (Professional) Type III (H) 10-9240 part 8865544".

Or should I be using
Genuine GM Fluid 88861800 Manual Transmission
This stuff costs three times more than the AC Delco gold?

The differential from what I can see a lot of folks are using mobile 1 with the additive already in.
Mobil 1 75W-90 Synthetic Gear Oil 1 Quart

Does anyone have any Issues if I use the above products

Thanks in advance
 

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685 Posts
Not sure about those but I have always used Royal Purple for transmission and diff. The diff I use has LS on the bottle so it has the additive in it already.
 

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There are others that are highly recommended like Amsoil but that is what I have used since 2001
 
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