E85 mix

Vince1219 · 07-13-2015, 10:01 AM

GM guys, usually when I run e85 it's 2 gallons and half a tank 93.... Some times I get 17.5psi but if my fuel pumps are factory, how much e85 can I safely run.

csu87 · 07-13-2015, 10:03 AM

usually up to an e30-e40 mix.

Vince1219 · 07-13-2015, 10:03 AM

Quote:

Originally Posted by csu87

usually up to an e30-e40 mix.

Can you explain how much that is please? Sorry

JDuke335i · 07-13-2015, 10:09 AM

Quote:

Originally Posted by Vince1219

Quote:

Originally Posted by csu87

usually up to an e30-e40 mix.

Can you explain how much that is please? Sorry

This will be if your car is dead on empty

csu87 · 07-13-2015, 10:10 AM

bookmark this.

http://www.intercepteft.com/calc.html

Jeff@TopGearSolutions · 07-13-2015, 10:17 AM

Start with 30% E85. Keep in mind your current fuel source may already have 10% Ethanol.

Vince1219 · 07-13-2015, 10:20 AM

Quote:

Originally Posted by Jeff@TopGearSolutions

Start with 30% E85. Keep in mind your current fuel source may already have 10% Ethanol.

Correct?

Jeff@TopGearSolutions · 07-13-2015, 10:27 AM

Quote:

Originally Posted by Vince1219

Correct?

More or less. It doesnt need to be a 100% accurate. That's why I say aim for E30 cause once you tip past E40 you may be pushing the limits.

stanlalee · 07-13-2015, 10:32 AM

Approx 4 gallons of E85 with the rest (12 Gallons) pump gas (E10) will give you E30. 6 gallons of E85 will give you E40. If your gas is straight petrol (no ethanol) you will fill with 6 gallons of ethanol and 10 gallons of straight petrol for E30 and a 50/50% mix for E40 (8 gallons E85 + 8 gallons of Petrol). These are based on E85 figures. Your E85 pump may be anywhere from E70-E90.

Vince1219 · 07-13-2015, 10:34 AM

Quote:

Originally Posted by stanlalee

Approx 4 gallons of E85 with the rest (12 Gallons) pump gas (E10) will give you E30. 6 gallons of E85 will give you E40. If your gas is straight petrol (no ethanol) you will fill with 6 gallons of ethanol and 10 gallons of straight petrol for E30 and a 50/50% mix for E40 (8 gallons E85 + 8 gallons of Petrol). These are based on E85 figures. Your E85 pump may be anywhere from E70-E90.

The 93 down here in Florida contains ethanol, so I'll go with your first suggestion, 4/12... Thanks you all

:ninja: · 07-13-2015, 01:17 PM

This mixture can be greatly off of the e85 your using has poor quality.. I say test before u mix..

Example your mix calculators is based off of 85% ethanol content where as some places can have 78% when tested if that makes sense

07-13-2015, 02:56 PM

Quote:

Originally Posted by :ninja:

This mixture can be greatly off of the e85 your using has poor quality.. I say test before u mix..

Example your mix calculators is based off of 85% ethanol content where as some places can have 78% when tested if that makes sense

Agreed.

OP: what tuning solution are you using?

335NJ · 07-13-2015, 03:15 PM

Log often, review the logs, and that will determine how much E85 you can run on the stock LPFP. My car ran best on E35-40, some can't run more than E20-25, some can run E45.

mike@x-ph.com · 07-13-2015, 04:04 PM

Quote:

Originally Posted by 335NJ

Log often, review the logs, and that will determine how much E85 you can run on the stock LPFP. My car ran best on E35-40, some can't run more than E20-25, some can run E45.

+1 make sure to log often and double check that your fuel pumps are good.

musc · 07-13-2015, 07:16 PM

Quote:

Originally Posted by 335NJ

Log often, review the logs, and that will determine how much E85 you can run on the stock LPFP. My car ran best on E35-40, some can't run more than E20-25, some can run E45.

+2

Can't stress this enough. Log! My friends LPFP died with E25 (105k on car/pump). Every pump is different. Start low, log, and increase accordingly.

07-13-2015, 10:01 AM	#1
Vince1219 Private First Class 18 Rep 187 Posts Drives: 2008 335i Join Date: Jun 2015 Location: Hollywood, FL iTrader: (0)	E85 mix GM guys, usually when I run e85 it's 2 gallons and half a tank 93.... Some times I get 17.5psi but if my fuel pumps are factory, how much e85 can I safely run.
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07-13-2015, 10:03 AM	#2
csu87 Banned 2134 Rep 3,554 Posts Drives: 09 335xi Join Date: Nov 2013 Location: Northern Colorado iTrader: (0)	usually up to an e30-e40 mix.
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07-13-2015, 10:10 AM	#5
csu87 Banned 2134 Rep 3,554 Posts Drives: 09 335xi Join Date: Nov 2013 Location: Northern Colorado iTrader: (0)	bookmark this. http://www.intercepteft.com/calc.html
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07-13-2015, 10:17 AM	#6
Jeff@TopGearSolutions 3441 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	Start with 30% E85. Keep in mind your current fuel source may already have 10% Ethanol.
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07-13-2015, 10:32 AM	#9
stanlalee Major 261 Rep 1,093 Posts Drives: 07' E92 335i manual Join Date: Oct 2013 Location: Newport News, Va iTrader: (0)	Approx 4 gallons of E85 with the rest (12 Gallons) pump gas (E10) will give you E30. 6 gallons of E85 will give you E40. If your gas is straight petrol (no ethanol) you will fill with 6 gallons of ethanol and 10 gallons of straight petrol for E30 and a 50/50% mix for E40 (8 gallons E85 + 8 gallons of Petrol). These are based on E85 figures. Your E85 pump may be anywhere from E70-E90.
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07-13-2015, 01:17 PM	#11
:ninja: New Member 11 Rep 18 Posts Drives: Meh. Join Date: Aug 2013 Location: SFL - (Nin3 Fivh Foh) iTrader: (0)	This mixture can be greatly off of the e85 your using has poor quality.. I say test before u mix.. Example your mix calculators is based off of 85% ethanol content where as some places can have 78% when tested if that makes sense
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07-13-2015, 03:15 PM	#13
335NJ Colonel 533 Rep 2,872 Posts Drives: 2008 335i 6MT E90 Join Date: Feb 2014 Location: NJ/Philadelphia Suburbs iTrader: (1)	Log often, review the logs, and that will determine how much E85 you can run on the stock LPFP. My car ran best on E35-40, some can't run more than E20-25, some can run E45.
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