The aforementioned oil not in Mobil 1 site for rear diff. Just for front diff and transfer case. Site recommended a non synthetic 80w/90 oil for the rear diff but not available. Any recommendations or experiences using 75w/90 on rear differential? I can change to Amsoil, appears lots of options for Amsoil. Experiences on either? Btw I changed the trans fluid to Mobil 1 synthetic and shifts noticeably smoother. Thanks.
Mobil 1 75w/90 LS gear oil for 100 series rear diff in lieu of GL5 (1 Viewer)
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