Initially, I used half bottle of 44k since one bottle treats 20 gal as indicated. My mpg drop from 41ish to 37 (calc on fuelly app) on the initial tank of gas, but subsequently went back up 41mpg, then 45 mpg on next fill ups. So this time I used the entire line epr moa and 44k. Poured epr and ran for 10min changed oil and filter. Fill 4160ml 0-20 oil and 325ml of moa. Then put approx half bottle of 44k. The mpg on the initial tank of gas is down again to 37. I will wait to see if it improves and update. I got the products from amazon, the brand is ferrari mazerati of Washington. I understand that there may be variations based on driving style and time. However just wondering if the mpg drop happen to anyone else who uses this?
