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i'm a tech for acura, the reason for the crush washer is to prevent over torqueing. i dont know how many alum oil pans on tls and rsx i have changed do to over tightening. the crush washer wont prevent it.. just helps. also... honda and acura have a shield that sits on the sub frame so that no oil drips on the frame. it makes it nice not having to clean up all that oil. easy access to the filter if on a lift.. he he he. what sinthetics are people running in their new si?
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