Tech 408 Clevor Swap Turning Tricks 034
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We actually started and ran the 408 with seven quarts of Royal Purple’s 10W-30 break-in oil, and drove the ’Stang to establish an initial street-driving calibration with the PMS and also seat the clutch (even untuned, the thing sounds wicked). Greg drained the break-in fluid after clocking about 200 miles, replacing it with a full batch of RP’s XPR 5W-30 extreme-performance racing oil for our dyno testing and the road ahead. Autolite’s AR3910 spark plugs made the cut at this time too. View Related Article
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