Discovered that GOSS have a oil cooler for our rigs, part # is OC216 , oil cooler only with gasket and specified for EXF engine which is our oil burner.... certainly beats having to buy the whole thing.
Found a listing at Western Filters $376 ...............
https://www.westernfilters.net.au/pr...roductId=14853
something to add to my current parts listing to go along with ....
http://www.midnightmods.com.au/zen-c...o0ulvn2u2ado26