Hy Tran in all mine. The viscosity is my reason (and the water)
Most substitutes that I tried are thicker. The pumps seem to run
quieter with hy tran maybe less cavitation.
I do love a good hy Tran debate 
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Terry
O,100,72,102,123,104,124,105
125,129,149,1200,982
(2)2182s w/60in Habans
3225
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