DO NOT tell wife (or that it's a minor repair), pay whatever you must to fix it, or tell her you found a better deal and are going to sell this to get that. No matter what, admitt NOTHING!!! they can smell fear and guilt a mile away...

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1985 190D 2.2l Sold-to Brother-in-law
1996 Mustang 3.8l -"thinks it's a sports car"
1988 Grand Wagoneer - Sold (good home)
1995 Grand Cherokee Ltd -"What was I thinking??!!"