I think the Barton manuals really mean it when they say "SAE 20 weight oil" only in the gear case. We used 30, since that's what we had on hand, and actually, 20-weight seems a little hard to find. Well, turns out the friction clutch is sluggish to spin the impeller shaft fast enough to lock in the positive clutch, and I think the heavier weight oil is the culprit. Time for more testing.
i have a little street roller that uses sae 10w for the clutch box. i just special ordered it from napa. darley calls for sae 40w for the gear box but no clutches involved.
Need to repack the booster reel packing gland. Water went EVERYWHERE!
fwiw, i wouldnt even f*** with the booster reel or hose its nothing more than a pain in the rear. when i want to mess around at the house i use a 1.5" with a gated smoothbore and thats just to wet the pump before i go to do some real pumping. other than that when i go somewhere to really play i use two 3" into my deck gun using the 1.75 tip @ . i like to let it fly. some here on the site saw it in action and stood there in awe

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for me playing with the booster got old real quick