Originally Posted By: hillclimber
This being the site that it is, I should mention that you'll need to track down 502.00 oil for your Jetta, no matter what the engine is, iirc.
During the warranty period (60k-miles), and if it's not a TDI, then you are correct. For TDIs it's 505.01 or 507.00.
After the warranty period, there are lots of excellent choices including Mobil 1 products meeting API specs, Daimler specs, and BMW specs as well as oils meeting a VW spec.
If you want to keep it simple, just pick a synthetic oil in the 40-weight viscosity, 0w40 or 5w40. Never, never, never any conventional oil in any water-cooled VW, even if your dealer says it's okay.
BTW, Jettas are not that expensive to own, unless you depend on a VW dealership for every little thing. Then they can be terribly expensive. So just stay away from dealers.