OldIHC

The International owners manual won't have a specification for how much oil to use in a Chevrolet air cleaner...

Actually I am surprised a Chev air cleaner even fits the IH. I'm assuming Holley carb.? I have both GM and IH six cylinder engines here and those air cleaners would not inter-change without some modifications.

Holley 1904 yes and it fits perfectly, im not 100% sure its a chevy filter but ive seen the exact same one on almost every early 50s Chevy six