Hope your road trip was fun! It depends on which kind of engine the Equinox has and which model year it is.
Generally, you can use 5W-30 synthetic engine oil in first-generation (2004-2009) 3.4L, second-generation (2009-2017) 2.4L or 3.6L, and third and fourth-generation (2018 onward) Equinoxes.
If you live in an area with extremely cold temperatures, you can use 0W-30 or 0W-20 engine oil. You can find this type of oil at most gas stations and auto supply shops.