Replacing my "squealing" AC Compressor (6A671-97110 or 6A671- 97114) and flushing out the system on a Kubota Tractor L3430 HSTC Closed Cab 2004. Specifications with this model compressor sold on line have shown both 2.5 and 5.0 OZ PAG 46 OIL I suspect that is a general spec. most say refer to...