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Can someone please tell me how much transmission fluid I should put in my 89 460. I just changed it a week ago I put over a gallon in, I just checked the thing it is almost bone dry. Is this normal? there are no leaks in the pan or in my driveway. Also 7quarts or 6 quarts of oil?
The 460 with an E4OD takes something like 15qts of ATF. Yours is probably not an E4OD but it will likely take a lot of fluid. Even my chebby car tranny takes about 12qts.
One gallon is nothing. If you drained the torque converter, that alone holds about a gallon and until it fills back up, it will keep your fluid level low.
Whenever you change tranny fluid always run it for a minute and then check fluid and top up. Then run it a day and check the fluid and top it up etc. Do this for at least a week, it may take that long to get the air out of the system. I usually add about 3/4 of the amount of fluid mentioned in the manual and run then top up, that is if I drained the TC and cooler. If you didn't drain the coller and TC then you will use less than 15qts but still much more than 8qts.