Off Topic R190 Truck

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Jeff A in TN

New User
I posted this question on the classic truck forum but didnt get much of a response.I know this is not a tractor but it is an International.I have an R190 truck with a 450 Red Diamond engine.I just bought this truck and dont know any history on it.I want to change the engine oil but dont have any idea what weight or kind of oil to put in it.Any suggestions?
 
Originally, IH recommended straight-weight SAE 20 or SAE 30 in the warmer climates/months. For year-around use, I think you'd probably be good with a modern 15W40...as long as it has sufficient ZDDP in it.
 

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