I just had an epiphany last night that I won't be able to afford Mobil 1 every 5k miles. So I decided to use 3 quarts of Exxon superflo and 1 quart of M1 and one ounce of Valvoline Synpower per quart of oil. I have an 04 Civic. I was wondering how does that sound and if there are any benefits from 1 quart of M1? Any advice is highly appreciated.