According to my manual the charge is 450g plus/minus 25g of R134.a refrigerant.
2010 Berlingo Multispace HDi 110 with FAP. Persamos green.
The most practical approach is to use the aircon regularly (eg, at least once a week if not always) as this keeps the lubricant relatively dispersed through the system. Until I dismantled it for service a year ago, my 1999 Xantia still had the original charge and still cooled decently. If yours can still nearly ice the evaporator return line, I suggest keeping your hands in your pockets, rather than feeding the starving dealers.
I have seen comments by two polymer chemists (cannot recall which website, but it was discussing aftermarket AC hose stock like thinwall Galaxy) stating quite confidently that "reverse migration" can occur whereby - in this case - water molecules eventually entered the AC system through the AC flex hose linings. (At least one forum member will refuse to believe this.) Point here being, that eventually the R/D needs replacing or reinvigorating, but this is well into the future compared to your four years now up.
Citroen say aircon service every 2yrs. I left mine 4yrs & it was still working ok. I had aircon serviced at last service & was told there was not much coolant left in. They put some sort of luminous stuff in it & told me to return in a month to check it wern't leaking. I did that & it was ok so hope its ok for another 4yrs. I always run aircon at least half hour a week throughout year as suggested.
21-04-2013, 12:08 PM
(This post was last modified: 21-04-2013, 12:09 PM by addo.)
That stuff's a fluorescent dye, which dissolves in the lubricant oil. You use a black light (UV torch) to see it.
If you know the oil is a greeny-yellow to begin with, it's already got the dye in.
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I use the aircon to demist in winter, it clears the screen in no time. We actually had to put it on yesterday to cool the car interior :whistle:
So where does this bit go then ?