Good afternoon fellas. I have a 2010 Toyota tundra 4x4 that requires gl-5 rated gear oil in the front and rear diffs and transfer case. I'm a fan of shell/pennzoil products so I wanna use shell spirax synthetic 75w-90 gear oil but I'm not sure which one would be best for my application. I want to not have to do this drain and fill very often so extended drain is important but protection is of utmost importance. Also better gas mileage would be a super huge bonus if one of the shell spirax synthetics can do that too. So to all you gear oil gurus which spirax gl-5 would be best for me?
Thanks,
Eddie
Thanks,
Eddie