That depends on many factors.....
1. Do you plan on keeping the car for 60-100K?
2. Do mostly short drives, less then 50 miles daily?
Then use a Regular oil like Mobil, exxon, etc... and a decent oil filter (NO FRAM!!) THEN EVERY 3k, If you use Mobil1Syn then every 5-6K
1. Only plan on keeping the car less then 60K
2. Do mostly highway driving, 50 miles a day is nothing to you?
Then use a Regular oil like Mobil, exxon, etc... and a decent oil filter (NO FRAM!!) THEN EVERY 5k, If you use Mobil1Syn then every 8-10K