Thread: Automatic Tranny Fluid Level

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The O rings will likely fix the problem.

I have seen situations where if the bracket holding the dipstick tube to the engine is tweaked a bit it will put the tube in a bind (more pressure on one side of the tube than the other) and cause a leak.

I'd advise strongly against over-filling the transmission. Transmission fluid has a pretty good expansion rate. Too much fluid especially if you have a long hard pull, like going up a long steep hill, can cause an overfull transmission to blow excess fluid out the vent. TH400s were pretty notorious for this.



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Originally Posted by Mike P

I'd advise strongly against over-filling the transmission. Transmission fluid has a pretty good expansion rate. Too much fluid especially if you have a long hard pull, like going up a long steep hill, can cause an overfull transmission to blow excess fluid out the vent.

Thanks, Mike. I was just considering that the "hot/warm" fluid level is below "FULL", about mid-way between ADD and FULL, so adding a cup or so would just bring it closer to "FULL", but that said it's an aftermarket tube (LOKAR), so I can't say that it's dead on with the marks. Probably best to just let it be, with the fluid level just at the top of the tube port on the case when cold, as long as it's happy when hot.