Author Topic: Ethanol ip leak fix  (Read 1750 times)

May 06, 2018, 09:22:16 pm

bpcaddy

  • User+

  • Offline
  • *

  • 30
Ethanol ip leak fix
« 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.



Reply #1May 06, 2018, 10:32:48 pm

srgtlord

  • Veteran

  • Offline
  • ***

  • 791
Re: Ethanol ip leak fix
« Reply #1 on: May 06, 2018, 10:32:48 pm »
If it does work its just a band-aid. It will leak sooner or later again

Reply #2May 06, 2018, 11:10:22 pm

ORCoaster

  • Moderator
  • Veteran

  • Offline
  • ***

  • 4383
  • Personal Text
    Restoring a Caddy as time and weather allows
Re: Ethanol ip leak fix
« Reply #2 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. 

Reply #3May 06, 2018, 11:24:05 pm

Tmarkle

  • Junior

  • Offline
  • **

  • 153
Re: Ethanol ip leak fix
« Reply #3 on: May 06, 2018, 11:24:05 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.


Sent from my iPhone using Tapatalk
1985 Jetta 1.6 NA, Project
1981 Rabbit 1.5 diesel SOLD
1980 Dasher, also a project
1993 Passat GLX VR6 (daily driver)
1992 Toyota Pickup, 350 V8 swapped
1997 Jetta TDI, engine donor for a diesel powered Toyota!
1986 Toyota Custom Cab

Reply #4May 06, 2018, 11:31:11 pm

srgtlord

  • Veteran

  • Offline
  • ***

  • 791
Re: Ethanol ip leak fix
« Reply #4 on: May 06, 2018, 11:31:11 pm »
High concentrations of Ethanol eats aluminum

Reply #5May 08, 2018, 06:28:46 pm

bpcaddy

  • User+

  • Offline
  • *

  • 30
Re: Ethanol ip leak fix
« Reply #5 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.