I went to Auto Zone to cross reference my hydro oil filters to a name brand oil filter. I didn't want to pay my dealers price for an oil filter. They could not cross reference the numbers over to a name brand filter. Any one know how I can cross reference numbers? Can it even be done? One of my filters is a Ransomes, the other is a Texron. These company's do not make there own filters, they have a name brand company manufacture them.