ISO 7840 A1 should be suitable for E10 fuel but its normal use is for fill lines and vents and Goodyear have a warning on their spec sheet - Do not use for pressure lines on fuel injected engines.
Ethanol will easily damage R6 hose and while changing it every year might prevent a visible leak you can’t stop the Ethanol in UK pump unleaded passing through it.
I checked mine today and it too has started to split. Could metal lines be used with a smaller amount of rubber to connect it?
there are a fair amount of metal lines on a fuel injected van anyway but the pipes still split, my last lot has split in less than 2 years, i've just done it all again but next year i'll be using 100% ethanol proof i think.
I think the R9 hose does not like hot places. A length in my fuel feed bought from T2Customs that runs past the heat exchanger hot air outlet in the draught from the oil cooler went hard and started to move around on the end of the metal pipe going through a grommet in the firewall despite it being properly clamped with fuel hose clips. And another piece split after being pulled off the fuel pump a couple of times.
i cut a piece of new ,never used stuff the other day to use to stop something vibrating n i slit it down n opened it to fit onto a sharp edge n it split i two places , it also had a seam down it
I just replaced all mine with this.... http://www.machine7.com/product.php?xProd=13183 How long will it be till I'm doing it again???
I had another look and there are no manufacturer stamps just r9 and the type of line. I might order some of codan line
I just had some Halfords R9 marked hose that went from quite hard as new to floppy like silicone in three days with petrol in it. So it popped off the carburettor and washed the paint off. Fortunately I had just started the bus so it was only messy and smelly.
