Quote:
Originally Posted by Jimbo370
I was told always use what the manual says and that Nissan already did a million dollars of R&D. The oil weight gives the proper shear time on the gears and your going to let 1 person change your mind? 
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Well not really one person. This was a Nissan dealership. That one person just said Nissan now recommends 0w20 in the z.