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    05 Buick Lesabre using oil

    I'm new to BITOG and have a 05 Buick Lesabre 3.8 Litre with 69,000 miles. I purchased the vehicle from a friend of a 94 year old lady who had passed away and barely drove it. I changed the oil using 5w30 Valvoline Full Synthetic High Mileage, which is Dexos1 Gen2. I also checked under the...
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