Does anyone know what will happen if I unscrew the small (1/4" ?) plug that is under the right side of the crank case on an 88B engine as found on the 2005 FXSTI. I'm hoping that it will empty out the remaining oil that doesn't come out when I do an oil change by unscrewing the "proper" oil plug fitted to the vertical pipe leading straight up to the engine oil tank. I find I can easily have 1 quart of old oil left in the motor. (Not good!). I suppose I should just unscrew it and find out, but in case this is a "no-no", I'd be interested to hear.
Thanks
giles..
Thanks
giles..