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Discussion Starter · #1 · (Edited)
The owner's manual calls for 70w. I'm looking to drain and fill the transmission to flush initial break in particles. Anyone here done their's using non-hyundai with success and what are you using?

Thanks!
 

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Discussion Starter · #3 ·
Did some research and we certainly need to stay in GL4 category. I've been seeing some positive reviews on the Motorcraft XT-M5-QS.

Here are the better performing synthetic MTF I believe will work in the 6MT.

Motorcraft XT-M5-QS
Amsoil 75W-90
Redline MT90 75W-90

I did not list Royal Purple 75W-90 only because it's GL4/GL5 rated. I'm going to try out the Motorcraft and I'll update this thread with my opinion.
 
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