Originally Posted By: demarpaint
Originally Posted By: FMC
Now for me and my Ford 3.0L DOHC, the 4oz/10gal seems to make the engine ever so slightly sluggish, I'm going to lower it down on the next tank full 2oz/10gal and see the response.
Try 3 ounces and work down from there. 2 ounces in 10 gallons of gas is a 640:1 ratio, which is very little IMO. How long have you been using MMO?
3rd time, started with a mistake of 4oz/19gal, then realized on the second tank to do 8oz/19gal, this time is the 3rd tank at 8oz/19gal, I refill with about 1 - 1 1/2 gal left.