lgold(at)quantum-associat Guest
 
 
 
 
 
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				 Posted: Sat Nov 01, 2008 11:01 am    Post subject: Fuel return-Mogas | 
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				Phil,
  Like you, I always use mogas when I can find  it but I check for ethanol each time. In my area (N. Ca.), until last week  there was no ethanol in the Chevron 91 octane. Now Chevron apparently switched  to a winter formula and is running a little over 5% ethanol. Rotax says for  my 912ULS, not to use fuel with more than 5% ethanol. Now I'm not  sure if I should continue using mogas this winter. A friend has  switched to 50% LL100- 50% mogas since the mix would reduce the ethanol  percentage. This seems like a real pain. I may just switch to LL100 and add an  additive to reduce the possibility of lead fowling (I use ALCOR  TCP CONCENTRATE when I fill up with LL100... it really  works).
  Les
  [quote]         From:    owner-zenith701801-list-server(at)matronics.com    [mailto:owner-zenith701801-list-server(at)matronics.com] On Behalf Of    philip smith
 Sent: Sunday, September 07, 2008 4:44    PM
 To: zenith701801-list(at)matronics.com
 Subject:    Fuel return
    
       I posted this a while back but did not get definitive answers.  The    Rotax 912ULS I'm hanging on my CH-701 has a fitting on the top of the fuel    rail that says "return line to tank"  in the Rotax installation    manual.  Some have said just to block it off -  others said they    plumbed it back to a "line from the tank".  I imagine that this line is    to prevent fuel vaporization. I have installed a Spruce gascolator ahead of    the firewall it has a 1/8 npt fitting in the top for "fuel    primer".   Would it work to run a 1/4 hose to this fitting - I don't    want to run another line back through the cockpit if I don't have to. Planning    to use 91 octane mogas - field elevation is 4000ft with hot    summers. 
     
    Thanks  Phil
 
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