Re: 1951 ultramatic leaks

Posted by Mike On 2017/12/9 18:59:10

By any chance have you added an external cooler? I added 3 to mine which added a bit of oil capacity. I didn't make an anti drain-back hump in the lines on the way back to the trans. After sitting awhile, it would leak quite a but. I suspect that the trans doesn't do well a quart or two over-full and when sitting off, the fluid that's in coolers higher than the trans drains back, overfilling it. I've had the engine out for a couple years since then, but it's something i was meaning to address when it goes back together.

Just a thought.