Fuel recommendations
Thread Starter
Instructor
Joined: Feb 2013
Posts: 192
Likes: 54
Fuel recommendations
I've been putting Premium Unleaded 91 Octane in my bone stock '72 350.
It's been suggested that because of the ethanol in todays fuel I shouldn't be using over 85 octane and I should add Stabil 360. 1 oz to every 10 gal.
Anyone else doing this?
It's been suggested that because of the ethanol in todays fuel I shouldn't be using over 85 octane and I should add Stabil 360. 1 oz to every 10 gal.
Anyone else doing this?
Burning Brakes
Joined: Apr 2008
Posts: 1,222
Likes: 93
From: shelbyville West Michigan
Ethanol increases octane. I do not run premium in any engine unless I have knock issues. I fail to see the correlation between "not running over 85 octane" and "Ethanol in today's fuels". like cheese and bleach.
you'll probably get lots of people on both sides of the fence, but I see no reason to run premium, nor any reason to add stabil. that includes my 95 LT1 and 97 SL500, both of which require premium, but I do run 89 octane in my 68 L-71.
you'll probably get lots of people on both sides of the fence, but I see no reason to run premium, nor any reason to add stabil. that includes my 95 LT1 and 97 SL500, both of which require premium, but I do run 89 octane in my 68 L-71.
Melting Slicks
Joined: Mar 2005
Posts: 2,094
Likes: 298
From: Midlothian VA
Don't care what everyone else is doing, A/C in summer + regular = pinging.
Been running it on premium with ethanol for decades with no issues.
The only possible impact that you might encounter is ethanol eventually weakening your carb power piston - do a search, pick the piston manufactured from the correct material, and you should be fine.
Lars has a nice write up on this somewhere. <<<found it
Bottom line: While I don't care for it I don't see where the ethanol is causing me any issues.
Last edited by Hammerhead Fred; Mar 21, 2016 at 04:39 PM.
