Changing tranny fluid

[LS1CHEYENNE]

Since I've done my swap 3 years ago when I changed all fluids I haven't changed the transmission fluid . I've logged about 45,000 miles since then . I'd thought about taking it to a shop where they could flush it but I am told not to on an automatic (4l60) with 120,000 miles . So this is my question - since you can't flush the TC is there a way to get some of the old fluid out such as disabling the ignition system and turning the engine over ? Or does it even matter at this many miles ? Thanks . PS , what's the best way to disable the ignition system ?

[RedHeartbeat]

they can flush it, nothing wrong with that.

[withac]

Concerning flushes, this is some feedback I got from the rep of a major synthetic oil company. He indicated it was his personal opinion, not the opinion of his company.

A flush is like a empty glass with sugar in the bottom of it, then you pour tea into it. The sugar is stirred up and is floating all around. What if the sugar was metal shavings in the pan and you flushed the transmission? Well the shavings will stir and go all over the transmission and could give you problems later. I know a lot of people who have never had a problem with flushes, but I myself would never have a flush done on my person car/truck.

It was my understanding that this was more of a problem with tranny's that have a lot of miles and no service. Where yours has only 45K on it I would think you would be okay.

[Riceeater]

Id wouldn't give it an enema. I changed mine then drove it for a week and did it again.

[withac]

Concerning flushes, this is some feedback I got from the rep of a major synthetic oil company. He indicated it was his personal opinion, not the opinion of his company.

A flush is like a empty glass with sugar in the bottom of it, then you pour tea into it. The sugar is stirred up and is floating all around. What if the sugar was metal shavings in the pan and you flushed the transmission? Well the shavings will stir and go all over the transmission and could give you problems later. I know a lot of people who have never had a problem with flushes, but I myself would never have a flush done on my person car/truck.

It was my understanding that this was more of a problem with tranny's that have a lot of miles and no service. Where yours has only 45K on it I would think you would be okay.

I left out part of what the RP guy told me. This is what he said regarding a pan drop.

The pan drop is fine, our will over power what ever oil it mixes with as our film strength is 400 times stronger. With the mix we also recommend doing another pan drop at 5,000 miles to get a high concentrate of our oil in the tranny.