[Howard Jones]

Lynn, I don't really think that more oil volume is necessary. The main thing is to keep it cool and get it to the high heat generating areas inside of the box itself.

If you only wanted to add more capacity then I would place a reservoir in position so that the full line in you new reservoir is the exact same height as the full line in the gearbox when it is topped off.

Then I would attach a hose, no less than -6 to the drain hole of the gearbox and run it to the bottom of the reservoir. Vent the top of the reservoir to the fill hole in the gearbox.

A fill cap could be added to the reservoir as well as a dipstick.

If you use a cooler/ spray system and pump then you will need seal the reservoir and plum it in series with the cooler. I would mount it below the full line in the gearbox. This will keep it full all the time without drain back issues. Draw oil from the reservoir through a filter then to the pump then through the cooler back to the gearbox via the spray system. Any added capacity will not effect the full line inside of the gearbox this way.

My gearbox has just at 1gal of oil in the system now. If I was to add a reservoir later I would think that about a 1/2 gal more would be about right. Any more and the reservoir starts to get fairly large.

I don't think a reservoir is necessary. You could use a remote engine oil filter as a system filter and gain a quart or so that way. I didn't do this because I was worried about whether or not the pump could pump through a engine oil filter. I used a simple screen in-line filter.

In the end room will dictate what you are able to do. Not much room back there down low like that.

Post pictures of what you come up with.

Those clamps are excess quantity work related donations. But you can call HRP at 866-851-7223 or Pegasus at 1-800-688-6946. They are the same type that are used on Accusump systems. They are smaller in diameter all though. Many sizes are available.