Transaxle oil cooler pumps Options

[pcar916]

How many of you are using gear pumps instead of diaphragm types and what filter element (micron) sizes are you using?

[pcar916]

Thanks, I've done all I can to make sure it stands the test of time and vibration. I really hate rework due to poor engineering. So, the interim report.

After roughly 1000 miles of both spirited twisty Arkansas roads and 70 mph highway driving. I mean it... I never exceed the speed limit. Track report when I can get to one.

Temperature: average 150F - 170F (synthetic)
Pukeage: I expected some but it's as dry as a bone
Pump volume: ~ 2.5 gpm

Observation:
1. Works better than expected. Frankly, I'd rather it ran a little hotter.
2. Changing the fluid is a breeze.

I may relocate, or add another sending unit closer to the R&P/gear stack to test whether the box is hotter up there than at the back of the transaxle. I won't do this immediately... too many other things to do. But I'll update again with the temp-delta if there is one.

Note: About the sending unit.
To have one less place to leak fluid, I drilled the hole for the sending unit dry, so it doesn't contact the trans fluid directly. Then filled it with salt water as the sending unit was screwed in.