RT6 in all of our propane lift trucks, except for our Hyster, with 4.3 Vortec V6. She gets VR1 10/30.
Filters are Fleetguard LF9028 dual flow filters, except the 4.3 Hyster, which gets a Fram Ultra.
About to move the whole fleet over to VR1, because of its ridiculous shear resistance.