auto transmission pipe

[dickyb]

is it ok to use rubber fuel line on an automatic transmission. or is there a line I should be using.

[mygasser]

i may get slated for this but i have done many times with no issues so take from that what you will. oh and i've run them for several years like it.
neil.

[dickyb]

Cheers I changed the line when fitting a piggy back cooler. then read on line not to use fuel line. but will see how it goes. Thanks.

[Happydaze]

My roadster has high pressure fuel injection fuel line on the transmission and has been trouble free for 20 odd years.

It's just reinforced rubber hose when all is said and done!

Chris

[dickyb]

I have only put on autobar petrol hose. Thanks for your reply.

[mygasser]

Cheers I changed the line when fitting a piggy back cooler. then read on line not to use fuel line. but will see how it goes. Thanks.

there's lots we're told 'not' to do but how often do we listen? if it's safe and it works then it works i say.
neil.

[wolselliac]

True, and yes the auto fluid is a hydrocarbon, but it's the additives that may pick something up from inside the tube and carry it to a small port (potentially restricting it or worse blocking it) You all have heard or "friction modifiers" and of engine builder who use auto fluid to wash the engine innards prior to final assembly.
But I digress, best to read the ingrediencies (and as you said "who does") and find out if the rubber is effected by them, or contact the manufacturer (not just the labelled brand) and ask their Technical dept.
Having talked to a transmission specialist (ok 30 yrs ago) and asked about pipework to the cooler, he mentioned that they were low pressure as the last thing you need is a high pressure leek especially as some (if not all OEMs) go to the radiator base. This has an advantage over a solo cooler in that it warms up the box quickly to operating temp , although when it's working hard it need a solo rad to offer chilled oil back to the sump .