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  1. #1
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    cleaner for undercarriage

    I've got a pressure washer and ordered an undercarriage attachment. I live in MD where I have to deal with a lot of salt on the roads. Can i get away with just using water or do i need an APC or other cleaner? I searched multiple forums and there are a million APC's that people suggest. I just want something to rinse salt/mud and not damage the undersurface. Also something simple that I don't have to dilute would be great. I get nervous thinking about diluting because i don't want to do damage. I have simple green lying around.

    Can i get away with:
    water alone?
    car wash soap via a foam cannon or the pressure washer?
    or hand spray an APC spray bottle that i can then rinse off?

    Any suggestions would be appreciated, but really looking for what product is easiest/cheapest to use. Thanks.

  2. #2
    Super Member Klasse Act's Avatar
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    Re: cleaner for undercarriage

    I'd try Pearl from P&Scleaner for undercarriage

    Sent from my SM-G950U using Tapatalk
    2018 Hyundai Elantra Sport...coated, finally!
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    Some say..."He likes Swedish fish because they're made with caranuba wax"

  3. #3
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    Re: cleaner for undercarriage

    Thanks. So could i get away with any reputable car shampoo (i have some chemical guys soap)?

  4. #4
    Super Member Klasse Act's Avatar
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    Re: cleaner for undercarriage

    Anything will work because your just trying to keep it clean, the effort is worth itcleaner for undercarriage

    Sent from my SM-G950U using Tapatalk
    2018 Hyundai Elantra Sport...coated, finally!
    JUN B.L.axle-back/SXTH Element CPLT intake & catch can
    Some say..."He likes Swedish fish because they're made with caranuba wax"

  5. #5
    Super Member briarpatch's Avatar
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    Re: cleaner for undercarriage

    Quote Originally Posted by zeak View Post
    Thanks. So could i get away with any reputable car shampoo (i have some chemical guys soap)?
    I can not see where it would hurt. P&S Pearl shampoo is an excellent, under the radar car soap. For undercarriage washing, I might be inclined to try a product like AutoFoam from Bilt Hamber. It has outstanding cleaning power, and also corrosion preventatives (I believe).

  6. #6
    Super Member acuRAS82's Avatar
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    Re: cleaner for undercarriage

    Im in a similar boat as OP, but I don’t have the nice tools: pressure washer, undercarriage attachment. I need to do SOMETHING though. I’m thinking maybe spray an APC, hose rinse, spray Feynlab Pure Rinseless (strong Rinseless wash), hose rinse. Unfortunately I don’t have a foam gun of any type (only an IK Foam sprayer) to use a regular wash and I have no plan of agitating with a sponge.

    I’ll also be jacking up one side of the card with a hydraulic garage jack to get the spray and rinses done since I don’t have a nifty undercarriage attachment.

    Anyone have any better recommendations than the APC/strong RW/hose rinse method I’m planning?

  7. #7
    Super Member briarpatch's Avatar
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    Re: cleaner for undercarriage

    Quote Originally Posted by acuRAS82 View Post
    Im in a similar boat as OP, but I don’t have the nice tools: pressure washer, undercarriage attachment. I need to do SOMETHING though. I’m thinking maybe spray an APC, hose rinse, spray Feynlab Pure Rinseless (strong Rinseless wash), hose rinse. Unfortunately I don’t have a foam gun of any type (only an IK Foam sprayer) to use a regular wash and I have no plan of agitating with a sponge.

    I’ll also be jacking up one side of the card with a hydraulic garage jack to get the spray and rinses done since I don’t have a nifty undercarriage attachment.

    Anyone have any better recommendations than the APC/strong RW/hose rinse method I’m planning?

    PM sent

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  9. #8
    Super Member psnt1ol's Avatar
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    Re: cleaner for undercarriage

    Quote Originally Posted by zeak View Post
    I've got a pressure washer and ordered an undercarriage attachment. I live in MD where I have to deal with a lot of salt on the roads. Can i get away with just using water or do i need an APC or other cleaner? I searched multiple forums and there are a million APC's that people suggest. I just want something to rinse salt/mud and not damage the undersurface. Also something simple that I don't have to dilute would be great. I get nervous thinking about diluting because i don't want to do damage. I have simple green lying around.

    Can i get away with:
    water alone?
    car wash soap via a foam cannon or the pressure washer?
    or hand spray an APC spray bottle that i can then rinse off?

    Any suggestions would be appreciated, but really looking for what product is easiest/cheapest to use. Thanks.
    I have an electric washer that has a reservoir for soap ( not at the tip of the nozzle) and I also have an undercarriage attachment. I filled the reservoir with a strong pre-wash solution (powerclean, 3D pre-rinse, or purple power vehicle and boat soap) and utilize the carriage attachment to get to all the nasty bits underneath. Let it dwell for a little bit then power-rinse it down using the same carriage attachment with water. If it is really bad... I would use the carriage attachment and try to knock off the big chunks first then proceed as stated above.

  10. #9
    Super Member pro 4x's Avatar
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    Re: cleaner for undercarriage

    I use the poor man's method. I just spray my APC all over the undercarriage. Then rinse with a strong jet of water.

    I was going to order the UNDERWASHER. A tool that you hook up to your regular water hose. But i think they are long out of business. Too bad.
    2018 Colorado ZR2
    http://www.autogeek.net/

  11. #10
    Super Member briarpatch's Avatar
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    Re: cleaner for undercarriage

    Quote Originally Posted by pro 4x View Post
    I use the poor man's method. I just spray my APC all over the undercarriage. Then rinse with a strong jet of water.

    I was going to order the UNDERWASHER. A tool that you hook up to your regular water hose. But i think they are long out of business. Too bad.
    PM sent

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