Are there any alternatives to the giant temp sensor that came on the original I5 oil pumps? I found this one, looks like it's from the V8 quattro. This would be much easier to tap in somewhere.
The values for checking the b3/b4 I5 and V6 gauge with the factory tool vw1301 are same so I'd say they are the same. The V8 repair manual doesn't have those values but rather just a resistance/temperature comparison chart.