thinking about buying a 02 Golf or 00 Jetta to run on Veg oil. Both car's have over 200k miles and are in the 7-8k range(already converted). Anything I should expect to replace/repair on these? Both look and run clean....

 

200 000 km's is not alot for a diesel engine. Me and my father had a bunch of them and we lasted them until about 600 000 km's and they would still run pretty good. The record was an old turbo diesel and it lasted up to 902 000 km's.