I abused / ran very hard my wonderful S550 Mustang HPP convertible for 50000 miles year round. Ran like a dream and made $7K on it. Always warmed up and 2-3 min cool down, Pennzoil 5W40 euro synthetic every 3000 miles and trans every 20,000 with Motorcraft. Had dirty side catch can and Radium.alloy PVC baffle plate plugs at 25K miles. Went through set of 244/40/19 premium brand UHP and UHPAS every 7000 miles.
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