pidge Posted January 26, 2020 Report Share Posted January 26, 2020 Hello all. Long and short I’ve been all over Gods kingdom looking for what I believe is supposed to be used gl-4 gear oil (2L) in my 69’ 521 transmission. Pretty much all of the suppliers have only gl-4/gl-5 all in one and I’m hesitant in using this. Milton Nissan had a Gl-4, wasn’t 80w-90 so I passed and found another place that had Gl-4 75w-85...I think the Nissan stuff was the same, but can’t be sure. I see nowhere on the label that says “yellow metal safe” or the likes on any of the two mentioned. Any idea if these are ok to run in the tranny or should I stay clear of both? I’ve used Ratsun search and google with Ratsun as the end word and am still lost. Could someone point me in the correct direction as to what’s safe and what’s not. I’m in Southern Ontario Canada and don’t have a plethora of scrap yards with 521’s that I can easily replace a transmission or get parts. Thanks, Pidge. Quote Link to comment
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