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Engine Specific Info and Questions => IDI Engine => Topic started by: bpcaddy on May 06, 2018, 09:22:16 pm

Title: Ethanol ip leak fix
Post by: bpcaddy on May 06, 2018, 09:22:16 pm

I want to post this as I was looking and only found one post by a "mechanic". He said to ad ethanol. I did, some stuff thats not the 10% but more like 80 or 90% ethanol I think. Not one drop now.

Before it had a small leak and i drove for a while. My last caddy had small leak for 60,000 miles. This new caddy I filled up with corporate biodiesel of some sort at a pump in San Francisco and that same tank it started leaking really bad. Then I Put 1.4 gallons of ethanol and the rest biodiesel and not one drop.

I'm super impressed. Hope I don't screw anything up with this fix.

Title: Re: Ethanol ip leak fix
Post by: srgtlord on May 06, 2018, 10:32:48 pm

If it does work its just a band-aid. It will leak sooner or later again

Title: Re: Ethanol ip leak fix
Post by: ORCoaster on May 06, 2018, 11:10:22 pm

Any ideas why it works?  Dries out the seals?  Dries out the fuel?  Ethanol and water are not a good combo in most fuel systems.  That is why marine fuel doesn't have it. 

Title: Re: Ethanol ip leak fix
Post by: Tmarkle on May 06, 2018, 11:24:05 pm

Quote from: ORCoaster on May 06, 2018, 11:10:22 pm

Any ideas why it works?  Dries out the seals?  Dries out the fuel?  Ethanol and water are not a good combo in most fuel systems.  That is why marine fuel doesn't have it.

It makes rubber o-rings swell. I’m not to keen on trying this though. I think ethanol probably has very little lubricity if any.


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Title: Re: Ethanol ip leak fix
Post by: srgtlord on May 06, 2018, 11:31:11 pm

High concentrations of Ethanol eats aluminum

Title: Re: Ethanol ip leak fix
Post by: bpcaddy on May 08, 2018, 06:28:46 pm

Not sure but I'm only putting good quality standard diesel in from now on. No leaks still.