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    What oil shoul I use F150 4.6 V-8

    The Motorcraft 5w20 is a great oil, and my 95 Tbird with the 4.6 ran fine with it. If you're really uncomfortable with a 20 weight I'm sure any 5w30 would be fine, though. As for synthetics I think Mobil 1 5w30 is good match for the 4.6
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    5w20 in a 1995 Thunderbird

    About 300 miles ago I put Motorcraft 5w20 in my 1995 Thunderbird, 4.6L V8 with 87,000 miles. I am thus far very pleased with the results. The engine is no noisier then it was with a 30 weight, and the car seems to have better response and is a bit quicker to rev. Gas mileage at this point seems...
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