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CRC Heavy Duty Pro Degreaser #5246100 10/21/19 01:43 PM
Joined: Feb 2011
Posts: 7,489
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LeakySeals Offline OP
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Joined: Feb 2011
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I bought this yesterday. Anybody use it? I'm a little gun-shy to use anything on the engine after Purple Power corroded aluminum under the hood.

CRC Heavy Duty Pro Degreaser

http://www.walmart.com/ip/CRC-Heavy-Duty-Pro-Degreaser/821986826


06 Escalade 6.0L LQ9 AWD 170k M1 5w30
03 Maxima 3.5L 170k Maxlife HM 10w30
05 Malibu Classic 2.2 111k M1 5w30
06 Altima 2.5L 167k unk
Re: CRC Heavy Duty Pro Degreaser [Re: LeakySeals] #5246126 10/21/19 02:03 PM
Joined: Jan 2004
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nthach Offline
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Looking at the SDS of the non-aerosol version of the CRC stuff vs. the Purple Power there's quite a bit of a difference. PP has 25% lye(Sodium Hydroxide) which explains why it corroded your aluminum. pH seems to be same but I would trust the CRC stuff. I've been using Simple Green HD(purple liquid) or WD-40 Specialist Water-Based Degreaser for my underhood cleaning. They aren't as caustic to Al as Purple Power/Super Clean and its clones.

http://docs.crcindustries.com/msds/5484.pdf
https://docs.wixstatic.com/ugd/14ad0e_342940d078d94505b11d1358c997718c.pdf

Re: CRC Heavy Duty Pro Degreaser [Re: LeakySeals] #5246150 10/21/19 02:18 PM
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krismoriah72 Offline
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I use LA totally awesome.. $1 does all that i ever want out of a degreaser.

Re: CRC Heavy Duty Pro Degreaser [Re: LeakySeals] #5246493 10/21/19 08:15 PM
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RDMgr Offline
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I don't think the PP contains 25% NaOH. It contains 3-4% of a 25% NaOH solution or 0.75-1.0%. It is probably used to adjust pH for solubility and clarity which is a common practice is water based cleaner/degreasers.

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