I just noticed that the Amsoil PI bottle has markings on the side for 10 gallons, 15 gallons and 20+ gallons. I must be as oblivious as my wife claims I am because this is the first time I have noticed this. 
My Civic has a 13 gallon tank, and I am wondering if I should use the entire bottle in one tank of gas, or comply with the treat rate as per the markings on the bottle? This will be the first time I have used anything other than Lucas UCL in this car, so I want to get it right. My wife has a 2006 Pilot (23 gallon tank), so using the entire bottle was a simple decision.
My Civic has a 13 gallon tank, and I am wondering if I should use the entire bottle in one tank of gas, or comply with the treat rate as per the markings on the bottle? This will be the first time I have used anything other than Lucas UCL in this car, so I want to get it right. My wife has a 2006 Pilot (23 gallon tank), so using the entire bottle was a simple decision.
