It slipped again a couple days ago, but this time it did it while in 2nd and 3rd and for a longer distance from my house. By about 3/4 mile, the slipping was gone and back to normal shifts since. This slipping has occurs only about once a month on cold starts in the morning only.

Last night, I sucked out a quart of transmission fluid and replaced it with a quart of Trans-X that I had gotten a month ago after the last slipping episode. The slipping this week finally prompted me to use it.

My question now is how many miles do I leave it in. PEH in the first reply to this thread says to leave it in for 1000 miles. Is this a typo or does he mean 100 miles. I've read through most of the transmission/Trans-X threads and have seen 100, 200, 300, and 500 miles; but not 1000 miles.

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Rob
'84 300SD 258K
'85 300D (sold)