Sometimes I wonder whether answering something like this is right or wrong.(moral dilemma)
The subject has been covered before, and R9 is not the good stuff. It deteriorates subject to
temperature change and the plasticizes there in, it is not as good as going to a specific supplier and purchasing
the correct stuff.
Some will say there is nothing wrong with it , well ok but my findings on my bus after 6 months were to
say the least dire. Yes it was R9 and installed as recommended.
I went to a company called, Advanced Fluid Solutions, you get what you pay for and this hose has been on my bus for 4
and a half years now, and showing no signs of any problems. I am in no way affiliated to any company so am not biased.
I hope that this helps and does not offend anyone.
J & P