Quote:
Originally Posted by Laird Scooby
If your old fluid was due for a refresh as you put it, chances are any new fluid would have felt better. In other words if you'd changed it yourself with the same T-IV as before, you would have had an improvement.
Also on higher mileage cars, using the "flushing/Gibbon" change method isn't a great idea. Much better to do a few part-changes aka "sump-dumps" over the course of 3-4 months spaced a month apart. Reduces the risk of the new fluid (in bulk) blowing old seals that have partially dried out due to the old fluid. Also removes more dirt and sediment from the box keeping it cleaner which means it runs cooler. Lots of other benefits too!
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Sorry for jumping in here.
Does that mean, that at some point I should switch from "sump-dumps" to the Gibbons method? Let's say after five or six dumps the transmission is ready enough?
After many readings I did/do only the sump-dumps, but do I stay with that or do I better change?
TIA