I got some 5 quart jugs of Mobil 1 0W-30 for $5, quarts of Mobil 1 0w-20 EP for $1, and quarts of Mobil 1 5w-20 high mileage for $1. My wife and daughter have Hondas that I will use the 5w-20 in. I was planning on using the 0w-30 in a Ford F150 ecoboost that calls for 5-30. Any problems with that? I was also going to use some 0w-30 in a 2006 Jeep Wrangler with 4.0 that calls for 10w-30 but have read some threads that suggest Mobil 1 in those engines doesn't produce very good UOA. The local Autozone also has Castrol Edge 0w-40 jugs for $5. Get the 0W-40 for use in the Jeep?