I like to get the wire loose on the cap and then lift one at a time off off while it's running to see if it makes a difference.
I know some people disagree with pulling a firing plug wire off, but it sure tells you what you want to know right away.
What I heard was while the car was driving with a load on it.
Can't tell anything with that noisy little sucker sitting in park.:D
You know, just for kicks throw another quart in that trans and see what it does.
