depends, mobile 1 or royal purple you can go 15,000, ford recomends 5000 and only uses the cheap stuff, theres also the synthetic blend which is usually good for about 7500 miles (or atleast mobiles is)
Yeah I do mine every 3,000 miles just a old habit... now I am getting ready for the 30,000 mile service here soon after only a 1 1/2 of owning my car. So that tells you how much I drive around.
Be careful with the full synthetic oil. In the version of Ford's warranty for CT/NY/NJ/NH/GA, it says that full synthetic oil voids the warranty. I'd check up on that...could be a regional thing, I don't know. Better safe than sorry I suppose......
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Kenwood DPX-501 with Sirius - PH DS - CHE LCAs - CDC Billet Grill - CA Dream Hood - T-LOK - Hankook 255/50ZR17 - MRT AeroTurbine - CHE STB - GT front bumper
X-Charger #20 298whp 313wtq 10.7psi - Mustang Dyno - Tuned by Jerry Wroblewski