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Thread: Best rust penetrant!!!!!

  1. #1
    turbo addict looneytuner's Avatar
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    Best rust penetrant!!!!!

    50/50 mix of acetone and brake fluid!!!!! I have some Kroil ordered. USPS screwed up the order. So....I tried this concoction! Less that 5 minutes I put a vise-grip on the offending bolts. ( had previously ground the heads off to get something loose on a Chicago car.) They were almost LOOSE!!!!!!!!!!!!!!!!!!! I never saw anything like this before!

  2. #2
    turbo addict
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    Re: Best rust penetrant!!!!!

    The best rust penatrant is an oxy acetylene torch.

  3. #3
    turbo addict looneytuner's Avatar
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    Re: Best rust penetrant!!!!!

    You don't need the torch with this stuff. Try it, you will like it!

  4. #4
    Supporting Member Turbo Mopar Contributor
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    Re: Best rust penetrant!!!!!

    Not going to explode.... Make the shop smell like a fart.

  5. #5
    Supporting Member Turbo Mopar Contributor
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    Re: Best rust penetrant!!!!!

    It is worth a try
    Regards,
    Miles

    DD '87 Sundance T1, SLH with rear disks
    '87 CSX #432 2.5 CB TII, SLH

  6. #6
    turbo addict
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    Re: Best rust penetrant!!!!!

    I had heard a variant of this. 50-50 blend of acetone and ATF. That seems to work pretty good too. I'll have to try them side by side.
    Todd

  7. #7
    turbo addict
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    Re: Best rust penetrant!!!!!

    Issue with acetone, it can catch on fire, keep it in a safe place!!

  8. #8
    turbo addict Turbo Mopar Contributor iTurbo's Avatar
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    Re: Best rust penetrant!!!!!

    I'll have to try this on the next sewer machine rebuild at work.

  9. #9
    Rhymes with tortoise. Turbo Mopar Staff cordes's Avatar
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    Re: Best rust penetrant!!!!!

    Quote Originally Posted by tryingbe View Post
    Issue with acetone, it can catch on fire, keep it in a safe place!!
    It eats most of the spray bottles I've put it in too.

    I've found that Kroil is the best penetrating oil I've used. For heavily rusted stuff Kroil isn't the best. If you knock the rust off, you're good to go. I've used acetone and ATF before. I wasn't impressed given how much trouble it was to make and store.

  10. #10
    turbo addict looneytuner's Avatar
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    Re: Best rust penetrant!!!!!

    Quote Originally Posted by cordes View Post
    It eats most of the spray bottles I've put it in too.

    I've found that Kroil is the best penetrating oil I've used. For heavily rusted stuff Kroil isn't the best. If you knock the rust off, you're good to go. I've used acetone and ATF before. I wasn't impressed given how much trouble it was to make and store.
    Just mix a little in the acetone cap! Use a flux brush for soldering to put it on the bolts. Half a cap was enough to 2 bolts.

  11. #11
    Boost, it's what's for dinner... Turbo Mopar Staff Aries_Turbo's Avatar
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    Re: Best rust penetrant!!!!!

    Quote Originally Posted by chromguy View Post
    It is worth a try
    I've used acetone and atf before with good results. Haven't tried brake fluid though.

    Brian

    - - - Updated - - -

    Quote Originally Posted by cordes View Post
    It eats most of the spray bottles I've put it in too.

    I've found that Kroil is the best penetrating oil I've used. For heavily rusted stuff Kroil isn't the best. If you knock the rust off, you're good to go. I've used acetone and ATF before. I wasn't impressed given how much trouble it was to make and store.
    I use the old school little metal pump cans from harbor freight. They work well. Sometimes you have to make a plastic gasket though.

    Quote Originally Posted by turbovanman
    This one is easy, I have myself to blame, I rush things, don't pay attention to gauges when I should, change to much stuff at once then expect miracles, the list is endless.

  12. #12
    Hybrid booster
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    Re: Best rust penetrant!!!!!

    I find this guys videos interesting. He seems very knowledgeable. Strong language and iffy jokes:
    https://youtu.be/2G-dX50JuXE

  13. #13
    Supporting Member Turbo Mopar Contributor
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    Re: Best rust penetrant!!!!!

    Quote Originally Posted by RattFink View Post
    I find this guys videos interesting. He seems very knowledgeable. Strong language and iffy jokes:
    https://youtu.be/2G-dX50JuXE
    Not all Canadians speak this language but he is knowledgeable.

    I tried the brake fluid+ acetone yesterday (stored in a medical syringe) with success. Not sure if it is any better than any other mix.
    Regards,
    Miles

    DD '87 Sundance T1, SLH with rear disks
    '87 CSX #432 2.5 CB TII, SLH

  14. #14
    turbo addict
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    Re: Best rust penetrant!!!!!

    Go to the local dodge dealer and ask for a can of rust penetrant. The mopar branded stuff is awesome, will bubble and foam up on rust like battery acid on concrete.
    Ian Adams Function>Form 1990 shadow scrapped, too rusty:( 1991 Spirit R/T Scrapped, parts sold:( 1989 Turbo Caravan Daily beater with built-[I]ish [/I]​engine slowly evolving into weekend turbo beater.

  15. #15
    Supporting Member Turbo Mopar Contributor jonnymopar's Avatar
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    Re: Best rust penetrant!!!!!

    Quote Originally Posted by shackwrrr View Post
    Go to the local dodge dealer and ask for a can of rust penetrant. The mopar branded stuff is awesome, will bubble and foam up on rust like battery acid on concrete.
    Pretty solid reviews, one describing it exactly how you did:

    https://www.amazon.com/Genuine-Chrys.../dp/B00BV4DBAU
    Jon J.

    1989 Daytona ES 2.4L DOHC
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    If it ain't broke, fix it 'till it is!

  16. #16
    turbo addict Turbo Mopar Contributor iTurbo's Avatar
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    Re: Best rust penetrant!!!!!

    There is a YouTube channel called "Project Farm" that recently covered this. He does his own home-brew testing on products like these.

    https://www.youtube.com/watch?v=xUEob2oAKVs

    He has some really cool/interesting videos!

  17. #17
    Mitsu booster
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    Re: Best rust penetrant!!!!!

    Quote Originally Posted by shackwrrr View Post
    Go to the local dodge dealer and ask for a can of rust penetrant. The mopar branded stuff is awesome, will bubble and foam up on rust like battery acid on concrete.
    Case IH has something similar. However Kroil gets my vote. Either way, give them time to soak.

  18. #18

    Re: Best rust penetrant!!!!!

    Kroil rocks ! If the power company uses it, it must be good.

  19. #19
    Boost, it's what's for dinner... Turbo Mopar Staff Aries_Turbo's Avatar
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    Re: Best rust penetrant!!!!!

    looks like project farm's test of kroil puts it way below the cheaper stuff.

    ive used acetone/atf for years. i have metal pump cans (old school) that i use for the stuff cause it kills certain plastics and rubbers.

    Brian

    Quote Originally Posted by turbovanman
    This one is easy, I have myself to blame, I rush things, don't pay attention to gauges when I should, change to much stuff at once then expect miracles, the list is endless.

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