I am going to post this info within this thread-
-Block-Chekô is a complete combustion leak tester - CLICK HERE -
I will also ask poor Ray...
...to post some photos of other COOLING SYSTEM DIAGNOSTIC TOOLS, the system pressure tester being the most important.
Here are the pix of the additional diagnostic tools that Gary sent me... "Poor Ray"!
1) Cooling system (including cap) pressure check tool-
2) Shop air actuated cooling system flushing tool-
3) Coolant system refill tool (no air ingestion)