I made the mistake of trying to add a bit of transmission fluid to my truck ('98 2500 5.9L gas V8) early in the morning while still 3/4 asleep. I used a galleon jug of ATF and poured WAY more in than I should, hopped in and drove off.
Within a few miles, I realized it wouldn't shift past 2nd gear, and realized what I had done. I turned back and limped home. I checked the dipstick (something I was too asleep to do earlier) and the level on the dipstick was 6-8" above the MAX - don't overfill line.
That evening I siphoned out the excess and did a brief test-drive. It took coaxing, but it did finally up-shift into 3rd and 4th. However, it is still much slower to up-shift than it was. It did seem a bit like it got better after a bit of driving, but I didn't want to drive it too far. (Not sure how the dynamics of the fluid, air bubbles, etc. play into this.)
How bad is it that I drove roughly 10 miles with it overfilled? Are there any seals, etc. that I may have wrecked, or is it likely to work again now that the excess has been siphoned out? Anything I should be checking for?
FWIW, I was already planning on replacing the ATF and adjusting the bands this weekend. The bands haven't been adjusted in quite some time and ?might? be involved with the slow up-shifting.
Within a few miles, I realized it wouldn't shift past 2nd gear, and realized what I had done. I turned back and limped home. I checked the dipstick (something I was too asleep to do earlier) and the level on the dipstick was 6-8" above the MAX - don't overfill line.
That evening I siphoned out the excess and did a brief test-drive. It took coaxing, but it did finally up-shift into 3rd and 4th. However, it is still much slower to up-shift than it was. It did seem a bit like it got better after a bit of driving, but I didn't want to drive it too far. (Not sure how the dynamics of the fluid, air bubbles, etc. play into this.)
How bad is it that I drove roughly 10 miles with it overfilled? Are there any seals, etc. that I may have wrecked, or is it likely to work again now that the excess has been siphoned out? Anything I should be checking for?
FWIW, I was already planning on replacing the ATF and adjusting the bands this weekend. The bands haven't been adjusted in quite some time and ?might? be involved with the slow up-shifting.