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#1
IP: 99.7.118.97
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Type of fuel for atomic4
Hey everyone just wondering what type of fuel to use in my atomic4. The downloaded manual I have suggests 90 octane....In our area reg is 87 midrange 89 and premium ~92. I've know that you don't want to use anything with ethanol but just wondering what is the best choice??
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#2
IP: 172.95.97.58
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bcbristol, those old rating numbers are far different than todays. The 90 was an leaded regular grade of gasoline good for up to about 8:5 to 1 compression where as the new regular unleaded is good for up to 10:1.
Our A-4's are at 6.5:to 1 so finding a good fast burning fuel is problematic. Your best bet is todays regular unleaded without the ethanol if you can find it. If we could find some 83 rated regular things would be great. You will make more HP and torque with regular fuel and such low compression. Running premium is a waste of time money and horse power. Dave Neptune |
The Following User Says Thank You to Dave Neptune For This Useful Post: | ||
sastanley (06-16-2018) |
#3
IP: 24.224.194.51
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Shell v-power currently doesn't have ethanol in Canada ( I looked up BC) that's the high octane. Here in NS there's no ethanol in high test either. I have used high test in the A4 since the ethanol came out here in the lower grades...works fine.
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Mo "Odyssey" 1976 C&C 30 MKI The pessimist complains about the wind. The optimist expects it to change. The realist adjusts the sails. ...Sir William Arthur Ward. |
#4
IP: 99.7.118.97
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Thanks for the info. Just trying to be sure.
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#5
IP: 67.149.7.16
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After using regular unleaded for years, I switched to regular leaded (more expensive, sold by marina station here in Michigan). I have noted immediate and lasting improvements in my old A4's performance. Just a happier engine.
best, rob
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Hubris Catalina 30 on Lake St. Clair, Michigan |
The Following User Says Thank You to Robs Hubris For This Useful Post: | ||
Graham (06-14-2018) |
#6
IP: 174.199.13.209
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I just came back from Florida where I saw a gas station (Wawa brand) that sold gasoline with no ethanol for boaters only. Thanks to all for the tips.
David Dill Pearson 30 #319 Middleton RI |
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