So, Ford recommends one year or 10k miles on MC 5w-20 (semi-synthetic) to stay within warranty guidelines. Wally world has it in 5qt jugs for like $17. Add a filter and it's less than $25 including tax. With your current 90 mile per day trip, not including weekends your at 23.5k a year...meaning two or three oil changes a year max...So, for $75 a year you done three oil changes, run semi-synthetic and stay within warranty guidelines. OR you do a dino-oil change every 5k, how much would that cost?
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