Oil Hose

I am not familiar with GTH-08 hose, but most of us using Gates hose use the Gates Barricade, carburetor pressure rating is preferred unless you have a fuel injected engine.

Hi James,

Like you I use the Gates barricade for fuel line/hose however this is for crankcase oil - 12 mm oil hose that must meet temperature and negative pressure specification.

Gates GTH-8 specifications can be found: https://fittingsandhoses.com.au/shop/hydraulic-hose/low-pressure/gates-gth/

Rotax 912 oil line specifications (& actual operating ranges) (various sources);

·         Max working pressure 400 psi (Burst?)

·         Working pressure 135- 145 psi (Normal 29-73 psi above 3500 rpm)

·         Max temperature 140-150C

·         Max continuous temperature 130C (ULS) (Normal 90-110C)

·         Negative pressure of - 7.25 psi @150C ( 14.76 inHg)  (observe bend radius advice)

·         Bend radius 70 mm

Sorry, I mistakenly assumed fuel hose.

James Ott wrote:

Sorry, I mistakenly assumed fuel hose.

No apology necessary. At least you tried to help.

I am surprised at the apparent lack of interest, after all this is something every Rotax 9 driver will need to consider every 5 years (rubber replacement).

Just order the oil hose from your Rotax Service center. That said they don't all sell the same hose.