So happy now from getting 16 mpg to now 20+ mpg on my 2023 Everglades 2.3L let’s see if we can get to 21+ mpg! changed the stock air filter to K&N, cabin air filter to K&N, oil change to Mobil 1 Advanced Full Synthetic Motor Oil 5W-30, Mobil 1 M1-102A Extended Performance Oil Filter, and changed the spark plus to Bosch Double Iridium 96315. Running 91 octane. More upgrades to come and stay tuned! 
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