The manual for my 2011 WRX doesn't specify much other than 75w90 gl5.
Mobil 1 and Valvoline both say their synthetic 75w90 with limited slip additive would work fine. That doesn't seem to make sense to me. I'd like to hear from a technical stand point how that is correct or if it isn't how it's not. I've been told to run boutique oils but would prefer to use something more widely available if possible. Is it really as simple as any 75w90 gl5 will work?
Mobil 1 and Valvoline both say their synthetic 75w90 with limited slip additive would work fine. That doesn't seem to make sense to me. I'd like to hear from a technical stand point how that is correct or if it isn't how it's not. I've been told to run boutique oils but would prefer to use something more widely available if possible. Is it really as simple as any 75w90 gl5 will work?