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Old 08-23-2019, 12:30 AM   #1
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Simple Green Extreme for rad cleaning

The table on the container says the max dilution is 1:13 to prevent corrosion to metals. Is this what most folks go by or are stronger mixes being used for radiator cleaning without harm to the aluminum fins?
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Old 08-23-2019, 05:27 AM   #2
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Quote:
Originally Posted by capnqball View Post
The table on the container says the max dilution is 1:13 to prevent corrosion to metals. Is this what most folks go by or are stronger mixes being used for radiator cleaning without harm to the aluminum fins?
It actually says 1:3 -- and that's what I use.
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Old 08-23-2019, 05:34 AM   #3
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It does say 1/13. That is what I use and it works very well. I have posted elsewhere on the forum my procedure that FREIGHTLINER recommended.
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Old 08-23-2019, 12:59 PM   #4
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I use 3:1 ratio and it cuts the road grime very well. It takes a pH above 10 to damage aluminum so nothing to worry about and you need to rinse it down well anyway after spraying the extreme green.

3 parts water 1 part cleaner
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Old 08-23-2019, 06:30 PM   #5
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I use a power washer to get rid of all the road grime from radiator / engine / transmission. Just did it today. I did use some engine degreaser on the motor to clean it up for the slobber tube canister installation tomorrow.
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Old 08-23-2019, 06:33 PM   #6
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Simple green has a aircraft one for aluminum,,,,, I did it a few times...it got better but you really need to pull the rad and air to air to clean them up...
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Old 08-23-2019, 06:37 PM   #7
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You've gotta watch using power washers on radiators. If you get them too close you can close up the fins and ruin the radiator. Please don't ask how I know this.
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Old 08-23-2019, 08:54 PM   #8
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You've gotta watch using power washers on radiators. If you get them too close you can close up the fins and ruin the radiator. Please don't ask how I know this.
Gotta select the right tip and keep some distance.
If you do bend radiator fins, there is a comb you can buy at NAPA to straighten them.

I got a soap dispenser for a power washer. Without the soap container, it also acts as a very short power washer gun. Good for underbody / engine / radiator use.
You just have to be very careful you have a good grip and aren't pointing at any body parts before squeezing the trigger.
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