Originally Posted By: TomYoung
Also, is this brand of oil something folks have heard of? What is it that would make you choose "Farm Rated: Extreme Duty" for a older diesel New Beetle."
^^Well said^^
OP, you said it is made by Citgo, didn't you? That would make it Hugo Chavez's special stuff. You get what you pay for. A Quaker State engineer once told me, don't pay attention to the brand of the oil, but be sure to use the best oil you can afford for your application.
Also, take a long hard look at your battery cables, they are usually too small when a car is new, and get worse with age.