This summer I'm taking the family across country from Massachusetts to California then to Florida then back home to MA. We will be driving my new Lincoln MKZ 3.0 Ecoboost twin turbo recommend oil is 5w30. I want to run a solid oil that won't shear down to a 20 weight I'm thinking a solid 10w30 may be a better option? Maybe a known stay in grade 10w30 synthetic?