R134 Charge weight

Usually go 80% of R12 spec.

 

If possible capture, filter and re-charge with R-12.

 

EU and North America versions have very different systems with different capacities so any amount used will not cross over to the other version.

 

Exactly

 

I bought some R12 off eBay, 3 cans for about $80 and had it recharged. I remember when it was being outlawed, they were selling the stuff off at $1 a can. I was stupid and didn't buy 5 cases.

 

Did my '85 Euro last year and was charged for 2.5lbs @ $10/lb. No complaints going to R134 here.

 

Where can I find a table with the amount of coolant for the '91 Testarossa, European version?

 

Are you asking about engine coolant or AC refrigerant?
Both are in your TR OM Section 1, but it is the true complete coolant capacity shown -- i.e., filling a completely empty engine/system. When doing an engine coolant exchange, you can never get absolutely all of the old coolant out.