I have owned two Renaults since 2004 and I have never had to refill them. Maybe they regassed them when I took them in for service. The smaller Renault was more than 7.6 years when I killed it. The remaining one is 4.5 years old. I am also not a heavy user of aircon maybe that is why.
Source: Renault Laguna DCi 1.9
17 mths ago