Classic cars forum & vehicle restoration.
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trampintransit
Joined: 09 Aug 2010 Posts: 166 Location: Edinburgh
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Posted: Mon Jul 10, 2017 11:23 am Post subject: Replace your fuel lines...NOW! |
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There is absolutely NO DOUBT in my mind that ethanol is destroying fuel hoses. Modern petrol contains up to 10% ethanol and only R9 rated hose is safe to use for any length of time. If you have hose rated R6 or lower it IS NOT E10 PROOF.
What's worse...there's a lot of FAKE R9 hose out there, particularly on fleabay. far-east 'manufacturers' are just badging up old stock as R9.
If you car has anything less than genuine R9 petrol hose there is a real risk of a split and a fire.
Title Permitivity Working Pressure Notes
R2 Synthetic Rubber Tube And Cover Hose N/A N/A Oil & Ozone Resistant
R3 Braided Reinforced Rubber Hose N/A N/A Petrol, Oil & Water Resistant
R5 Wire Reinforced Rubber Hose N/A N/A Oil & Ozone Resistant
R6 Low Pressure Synthetic Rubber Hose 600 g/m²/day 50 PSI Inner Resistant To Petrol, Diesel, Oil Or Vapours
Ozone & Heat Resistant Outer
R7 Low Pressure Synthetic Rubber Hose 550 g/m²/day 50 PSI Inner Resistant To Petrol, Diesel, Oil Or Vapours
Ozone & Heat Resistant Outer
R8 Low Pressure Synthetic Rubber Hose 200 g/m²/day 50 PSI Inner Resistant To Petrol, Diesel, Oil Or Vapours
Ozone & Heat Resistant Outer
R9 Fuel Injection Synthetic Rubber Hose 15 g/m²/day 100 PSI Inner Resistant To Chemical Attack, Swelling, And Permeation By Gasoline, Oxidized ("Sour") Gasoline, Ethanol Extended Gasoline, Diesel Fuel, And Oil Or Lubricants Or Vapours.
Oil, Ozone & Heat Resistant Outer
R10 Low Pressure In-Tank (Submersed) Hose N/A N/A
R11 Low Permeation Fuel Fill, Vent, and Vapor Hose 100 g/m²/day N/A Inner Resistant To Petrol, Diesel, Oil Or Vapours
Ozone & Heat Resistant Outer
R12 Low Permeation Fuel Feed & Return Hose 100 g/m²/day 145 PSI
R13 Diesel / Bio-Disesl Hose N/A N/A Under Development
R14 Low Pressure Hose (Small Engines) 15 g/m²/day 50 PSI Other Characteristics As Per R9 Spec. _________________ '60 Armstrong Siddeley Star Sapphire
'80 Reliant Scimitar
'47 Jaguar MKIV --- in bits!!!! |
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ajlelectronics
Joined: 04 Oct 2010 Posts: 168 Location: Gloucester
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