Quote Originally Posted by Silver2kgtp View Post
Do you guys think a trans additive would help clean a solenoid in the trans?

When I put in new tranny, I tried to flush as much of the old oil out but wasn't able to get all out of trans cooler. The old oil was burnt and had metal in it. I now have a shutter/vibration problem when I'm cruising and steady on the petal.
Being that the old oil was burn doesn't really matter seeing as you got most of it and put fresh atf in.....but the fact that there was metal shavings from the previous trans that is what's probably the cause of your issue. Not additive is going to clean out metal shavings if they have made their way into the valve body and channel plate. You may get lucky that over time they will work their way to a point where they pass through the filter and caught but chances are they will have done damage to the valve or bore by then.