Thanks to you both. (and subsequent replies whether echoing or with different replies)
"When using a synthetic ATF, you shouldn't need any extra additives....And, IMO, for any machine flush, don't let them add any chemicals into the tranny."
I see the point, absolutely. So why does BG add TWO (one before and one after) to their ATF flushes? If I want to 'clean the guck out' well I have added a bit of Auto-RX to the ATF, plus I had the whole thing flushed exactly 2 years ago. (with a frustrating EIGHTEEN quarts of Redline ATF...I almost blew a gasket!
That was a different place, where I have not gone back)
I like the idea of a total change every 2 years and I suppose in saying domino effect, or mission-creep, I thought if the pan is off anyway, might as well ensure the torque converter had new ATF, since what is in there is 2 years old and is somewhat dirty (but still bright-ish cherry)
Another factor is, I just got another case of Redline ATF delivered, so I'm going for it anyhow. I like a bit of overkill in these matters, so while I agree a gasket replacement doesn't need to domino into a flush, my desire for overkill out-weighs pure logic / need as opposed to want. OK I admit it, the idea of a total flush is a done deal and my mind was made up the minute I decided to order the Redline ATF. My question is more about the additives, and while I'm at it, the following...
Somewhat
but I am thinking of adding a PS fuild change. I have Redline PS fluid but am thinking of getting plain PS fluid in there for a few months as a semi-flush, and THEN switching to Redline. Good idea? Needless but you can see my point in light of my penchants?? (Classic BITOG-er, all the way
While I'm at it, the car is a '96 and chances are it has the brake fluid that it left the (GM) factory with. It has traction control and ABS, so is it best to get it done at a GM dealership? I really think brake fluid is a bit more important than freshness of ATF or PSF, but despite a brake inspection and new rear drums on the 30th, I'm not inclined to part with the $ for a brake flush at this time.
Speaking of domino-effect, sorry to get off-topic or triple my questions.
Thanks!
Rob the oil nut in