Walmart online has a couple of GL4 gear oils that I didn’t see listed the last couple of times I looked. This may be of interest to people with manual transmissions.
VP Racing 80w-90 mineral oil
https://www.walmart.com/ip/VP-Racing-Fuels-2703-Classic-Gear-Oil-GEAR-OIL/919201952?athbdg=L1100
Motulgear 75w-90 synthetic (dual GL4/5)
https://www.walmart.com/ip/Motul-MO...-Fluid-Gear-Oil-3-x-1L/452387608?athbdg=L1100
VP Racing 80w-90 mineral oil
https://www.walmart.com/ip/VP-Racing-Fuels-2703-Classic-Gear-Oil-GEAR-OIL/919201952?athbdg=L1100
Motulgear 75w-90 synthetic (dual GL4/5)
https://www.walmart.com/ip/Motul-MO...-Fluid-Gear-Oil-3-x-1L/452387608?athbdg=L1100