HT4100 4.1, 4.5, 4.9 Discussion, Trans Fluid Capacity, '93 Deville, 4.9 in Cadillac Engine Technical Discussion; I'm about to change the Trans Fluid and Filter on my '93 Deville 4.9 and would like to verify exactly ...
The car was warm before we changed the filter and fluid and I let it run about 5 minutes after. Also shifted thru all the gears a couple of times before checking it. Took it for a 6 mile ride, checked it again and it still showed about 3/4 down, but at that point I only added 1/2 quart to be on the safe side.
We just drove the car on a 40 mile trip on a hot day to boot and before shutting it off I checked it again and it showed just under the Full mark. Therefore proving your point about checking it when it wasn't hot enough, but yet still my car takes 6 1/2 quarts to fill it.
I asked a knowlege-able friend of mine about his opinion on either going by the book or going by the dip stick and his answer was to go by the stick, which is also my opinion.
I never had to be this technical with my old Chevys, but I feel like it is necessary with what I own now.
OK, sounds good. If I remember right, I also had to add a bit when I changed the trans fluid in my '93 and '94. But I don't remember adding 3/4's of a quart. I'm sure there are variances in the dipsticks as well. I wouldn't worry about it though.