I just used Amsoil Severe Gear 80W90 GL-5 gear oil in the rear differential of my 2020 Toyota Highlander XLE AWD since that's what my 2013 Highlander called for and I had an extra bottle (squeeze bag?) laying around. 2020 Owners Manual calls for Toyota 75W85 LX Gear Oil.
Am I OK to leave until next diff oil change or should I change oil to recommended 75W85 or more readily available 75W90?
Am I OK to leave until next diff oil change or should I change oil to recommended 75W85 or more readily available 75W90?