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I am in the middle of rebuilding my oil cooler on my 2002 F350 7.3L,
I am ready to reinstall the cooler and not sure about the Orings,
The black ones that fit the ends of the cooler are loose on the cooler itself, If I slip one in the housing it fits tight inside.
I am wondering if this is normal?
I think it will snug up on the cooler once it all slides together, But wanted a second opinion from someone who has rebuilt a cooler before.
if things are not right,you will be back very soon,the orings should fit with out any drooping or visual looseness.a common mistake is a lack of lube with a good film strength.