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I filled my oil to full mark in dipstick on Sunday. It is a 98 Honda CRV. Tonight I discovered that a friend of my granddaughter has filled it to double that amount, its the same distance up my dipstick as it is under it. How much damage can this do to my car? She wants to drive it to Toora tomorrow to work but I am really concerned, can anyone tell me how much damage this would do to my car?