so 33 gallon makes it challenging to estimate the exact amount of EDT for fuel tank - especially when the tank isnt fully empty. I have been guessing, but always put in close to Performance dose and usually even a bit more. I asked EDT customer support, if slightly higher (0.5 oz - 1 oz) MORE than performance dose would do any harm to engine, and they said NO.
Now, with EDT, I have drained water from my fuel filter MORE so than without the treatment. EDT said, that fuel additive is doing its job by separating water and that extra treatment is NOT going to harm the engine - I do notice quieter motor operation AND definitely smoother/easier response from the motor with Good Diesel and Additive. I try to pump at BJs gas station that does high turnover of fuel - found this much better than cumberlands and even Shell or Mobil fuels (just subjectively while driving). I am in north-east BTW.
Will running performance dose or more be harmful for the engine ? Most diesel is 40 cetane and supposedly EDT boosts is upto 7 points, so in theory it helps the engine ?
I do mix driving, but every week do fair amount of highway driving. I have 18000 miles in first year - and have YET to have active regen/green light come on my dash. No towing, but do drive it to 80MPH on highway routinely with fuel additive in every tank since bought new - dont know if that plays a role in active regens (ones that show up on dash)/