I would use what your owners manual reccommends. With a high mileage engine, I don't reccommend changing. That is just my opinion.

Ask the folks at Amsoil.com, for a recommendation on a proper weight, it is one of the best synthetics made and the higher mileage saves on oil changes. I go a year now using their filter and oil.

For 2002, Volkswagen used synthetic oil in the turbocharged engines only.

The high pressure port cap is labeled H and low pressure port cap is labeled L. To have more idea on how to recharge your a/c just check out this link http://autorepair.about.com/.../AC-recharge.htm

Nice information about the water pump socloudy.

Engine oil specs are TYPE SF,SG,SH 5w-30 Check the owner's manual to verify.

are you asking about the cabin air filter;

The filter is located under the passenger side of the dash and is moderately difficult to access and change. My old filter was black so am glad I invested the 2 hours to figure it out, though.

To remove the passenger side section of the dash it's first necessary to remove the raised center section, which requires sliding it towards the windshield. I did this by positioning the corner of one end of a small block of wood in the gap and gently tapping the other end with a hammer. Once loose it can be slid forward and lifted out of the way.

Next remove the torx screws and funny washers nearest the windshield. The passenger side dash can then be detached by slowly lifting the left side of it straight up and then sliding it to the left. After disconnecting the speaker lead this section of the dash can be moved out of the way.

Still another layer of plastic to take out: remove the 5 torx screws (2 forward, 3 aft) and jiggle the plate loose to expose the filter assembly.

To get the filter out push the tabs of the frame slightly forward, lift the frame up, and pull it towards you. With some jiggling the frame + filter will come out.

A couple of notes about installing the new filter: the arrows on the filter that indicate air flow should be pointing down when installed; the left and right sides of the frame extend down into the first and last pleats of the filter for proper positioning; the filter should be in the frame before placing it in the dash; it can take some finesse to properly position the filter and snap the frame in place; replacement filters can be purchased at a NAPA store, or online at www.micronair.us if you prefer OEM

2004 valkswagon beetle runs for a few days then will not start for a few days it will draine the battery when off the horn will go off when car is stopped