I am a Costco member / Mobil-1 fan also. Hopefully in / around April 1stt, another rebate promo will occur. Being a fan of blending my own oils, I want to start blending 0W20 EP with my current (2) Mobil-1 Vanilla 5w30s. That will give me enough Mobil-1 oil for four OCIs. Intended to go inside our Kia 2.0, non-turbo Multi-Port F.I.
In the spring, my Hyundai will be engaged in two OCI runs of a blend of Pennzoil Platinum and Pennzoil Platinum High Mileage..... a 50/50 blend, both in 5W30. Both of these Korean makes will only see 4K OCIs.
Go Mobil-1 and promoted well by the likes of Sam's and Costco. Didn't mean to shift thread interest here. I won't return here to this thread..... sorry..