Mistakes were made

Asked by Thomas Feb 16, 2019 at 11:20 AM about the 2004 Buick Century Sedan FWD

Question type: Maintenance & Repair

2004 Buick Century. My tranny fluid cooler line
disconnected and dumped out all my trans fluid.
Didn't know a mechanic in the area and a friend
told me he was pretty sure all ATFs are the same.
He was wrong. So the car has a single quart of
idemitsu type J in it that I used to limp it home
about a mile because it was gonna be towed if I
couldn't move it. If I fill it back up to normal with
DEX VI will the transmission be okay, or do I have
to drain it first?

1 Answer
103,495

KenF answered 5 years ago

I don't think you hurt the tranny by using ATF J, but I would flush and refill with one OEM ATF. www.bobistheoilguy.com has some topics on using type J in place of Dex.

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