Using brake fluid to stop an oil leak? - JeepForum.com

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post #1 of 25 Old 10-15-2008, 03:11 PM Thread Starter
TheMightyGoat
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Using brake fluid to stop an oil leak?

I've been putting off changing my rear main seal as it looks like it's gonna be a pain, and then I heard that pouring a few ounces of brake fluid into your oil will swell the seals and stop them from leaking without hurting anything in the engine. Does that work? Is it safe?

Also, I'm due for an oil change. If I try this, should I put the brake fluid in the oil oil, drive around a bit, and change it? Or should I change it and put it in the new oil?

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post #2 of 25 Old 10-15-2008, 03:46 PM
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my bro has b een telling me this rumor for years. i still havent made up my mind on it yet.

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post #3 of 25 Old 10-15-2008, 05:03 PM
Timmah707
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replace your rear main seal. You never want to band-aid a real problem, or any problem for that matter...It's fun in owning a JEEP! Get-Ta-Wrechin'!

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post #4 of 25 Old 10-15-2008, 05:26 PM
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X2 on Timmah707

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post #5 of 25 Old 10-15-2008, 05:33 PM
DixiesCJ3B
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Yea it sounds like that might only be a temp fix, and possibly create bigger problems

X3 on what Timmah said

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post #6 of 25 Old 10-15-2008, 05:35 PM
kenbuck
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Um, I probably wouldnt be putting brake fluid in my engine oil. Fix the seal, its really not hard.

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post #7 of 25 Old 10-15-2008, 05:42 PM
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Replacing the rear main in these 4 liters is simple. Cost if you do it yourself is roughly 50 bucks and it takes between 3 and 6 hours depending. All it really entails is dropping the oil pan and undoing the rear bearing cap to get at teh two peace seal.

Here's a walk-through for ya...

http://www.jeephobby.com/repairs/rea...armainseal.php

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post #8 of 25 Old 10-15-2008, 07:45 PM
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would this be a good thing to do while replacing a clutch? i will be doing a clutch replacement soon and it seams like it would be a bit more simple with the transmission out of the way.

stuff
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post #9 of 25 Old 10-15-2008, 07:55 PM
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Originally Posted by tcox View Post
would this be a good thing to do while replacing a clutch? i will be doing a clutch replacement soon and it seams like it would be a bit more simple with the transmission out of the way.
Replacing the main seal doesn't involve removing the transmission...

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post #10 of 25 Old 10-15-2008, 08:14 PM
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I have a very minor real seal drip (117,000 miles). I am currently using Valvoline Max-Life 10/30 oil. Max-life is supposed to have approved additives to help with seals. Put it in at about 116,000 miles. It may be just my imagnation but I think it is helping.

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post #11 of 25 Old 10-15-2008, 08:24 PM
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Quote:
Originally Posted by 2jhanna View Post
I have a very minor real seal drip (117,000 miles). I am currently using Valvoline Max-Life 10/30 oil. Max-life is supposed to have approved additives to help with seals. Put it in at about 116,000 miles. It may be just my imagnation but I think it is helping.
It may be that its helping, but if you just replace the seal you could run normal oil lol... jerry runs normal 10-30w dino oil in his if im not mistaken and his jeep has well over 100k miles.

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post #12 of 25 Old 10-15-2008, 10:08 PM
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Quote:
Originally Posted by Squeeky View Post
Replacing the main seal doesn't involve removing the transmission...
i know it does not involve removing the transmission. the question was "would it be a good time to do while i have the transmission out of the way"

stuff
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post #13 of 25 Old 10-15-2008, 11:10 PM Thread Starter
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I started on the rear main tonight and had to give up on it after a couple hours 'cause I couldn't get those four bolts out of the exhaust. Whoever came up with the idea of putting that flange on the joint flush with the bolthead so it's impossible to get an open-end wrench on there, when there's already too little room to fit a socket wrench on it, is a complete and utter *******.

Class in the morning. I'll be back at it tomorrow. With a torch on standby.
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post #14 of 25 Old 10-15-2008, 11:59 PM
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Quote:
Originally Posted by tcox View Post
i know it does not involve removing the transmission. the question was "would it be a good time to do while i have the transmission out of the way"
Oh...the way you wrote made it sound like you were asking if a clutch replacement would be good to do since you'll have the tranny out of the way...my bad

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post #15 of 25 Old 10-16-2008, 12:01 AM
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Quote:
Originally Posted by TheMightyGoat View Post
I started on the rear main tonight and had to give up on it after a couple hours 'cause I couldn't get those four bolts out of the exhaust. Whoever came up with the idea of putting that flange on the joint flush with the bolthead so it's impossible to get an open-end wrench on there, when there's already too little room to fit a socket wrench on it, is a complete and utter *******.

Class in the morning. I'll be back at it tomorrow. With a torch on standby.
Hit them with pb blaster and let them soak for a day or so then try again...It may also be easier to use a socket with a long extension to get at those bolts

Quote:
Originally Posted by Unscathed View Post
Yea.. I mean really... who herculines their jeep naked.. go figure..

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