perform an oil change 3k miles or 3 months, whichever comes first.
i've seen many heads from cars whose owners actually went by this rule and they were sparkling clean
i've also seen heads from cars whose owner did not follow this, and they were sludgy and dirty
try to order original equipment filters
to many, oil is oil, but i prefer castrol gtx...i've seen motors stay sparkling clean with this stuff
i've used fram for many cars with no problems, but if you're worried just get the mobil-1 equivalent
i just lol @ the thought of having someone else change my oil...if anything it gives me a chance to check out other parts of the car that might need attention (seals, suspension, exhaust)
for god's sake have a dude do it, you're hot enough (i think)