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  #31  
Old October 22nd, 2019, 19:04
Down under Down under is offline
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Re: Suggestions for undercoating?

Talking of clean underbody......
I bought a pressure pack can of this unusual degreaser a while ago.
I used it on grease and oil..... utter rubbish!
BUT.... One day I was washing the clay and mud off the girl with a HP washer.
And decided to spray it on first.
Now still. Stuff comes out of the can like a white stream, then foams up a lot.
Smells a tiny bit like oven cleaner.
BUT! Talk about rip clay and dirt off!!!!
Strips it!
The brand will probably vary in the US etc.
Here it is branded as "5 star", 3 in 1 degreaser.
Cheap to buy.
It comes out real fast, so go easy at first.
I've used it in my engine bay. Use a paint brush to rub it with, and simply light rince off before it dries.
Gets all that hard clay forms years of build up off .
Docent seem to effect paint work if you rince shortly after.
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  #32  
Old October 22nd, 2019, 21:49
BALTANAKT BALTANAKT is offline
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Re: Suggestions for undercoating?

Quote:
Originally Posted by 4x4JeePmaNthINg View Post
Nice, you going with it?

Please post pics if you do!
I'm going to do it, but I need to figure out who could do it for me since I don't have a spray setup. Definitely seems the best way to go.
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  #33  
Old October 23rd, 2019, 06:02
Down under Down under is offline
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Re: Suggestions for undercoating?

I'm a bit lost to the final answer/solution.
Here in OZ, we don't get the salt issue, re-guarding snow etc.
Best thing to do is stop rust.
A few ways to go about it..
One under valued way is to buy a zinc anode meant for marine applications!!
Usually fitted to outboard motors!
Electrolysis!!
Google it!
You will be surprised at w h at at an anode can do!
Talp n to your chassis!
Cheap as!
Have you ever seen an old motor covered in with oil leaks... rusty ?
NO!
A penetrating oil here in OZ, "inox", like a light sewing machine oil.
I'm use once a year, in an engine cleaning gun, I spay the underbody with it.
Then feather it out with an air pistol.
Don't forget get the chassis rails! Drench them!
Squirt some in from both ends, and then use compressed air to feather it out thoroughly .
A good penetrating oil will loosen up grime and crap.
Far better option in my experience.
Tar, synthetic coatings won't do that.
But honestly for $10!!!
Google out board zinc anodes re- electrolysis..
And how they work!!!!
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  #34  
Old October 23rd, 2019, 19:36
lawsoncl lawsoncl is offline
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Re: Suggestions for undercoating?

Quote:
Originally Posted by Down under View Post
Google out board zinc anodes re- electrolysis..
And how they work!!!!



Or don't work for automotive applications. They work well on submerged applications like marine and buried pipes. Skip the zinc anode or fancy electrical gizmos that claim to provide cathodic protection. NOthing but snake oil.
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  #35  
Old October 24th, 2019, 12:34
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CMNCHE CMNCHE is offline
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Re: Suggestions for undercoating?

Ill throw out a recomendation for PFC from berkebile oil company. Its a lanolin wool wax that can be sprayed or brushed on. Ive been using it the passed three winters with good results.
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  #36  
Old October 24th, 2019, 16:31
Down under Down under is offline
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Re: Suggestions for undercoating?

Quote:
Originally Posted by lawsoncl View Post
Or don't work for automotive applications. They work well on submerged applications like marine and buried pipes. Skip the zinc anode or fancy electrical gizmos that claim to provide cathodic protection. NOthing but snake oil.
I could be wrong......
But most electrolysis damage occurs through the cooling system.
Copper/brass/aluminium etc , hence why there is so many chemicals added to coolant.

Trivia...
Ever seen old steel pylons sticking up out the ocean, rusted off just at the tidal mark height.
The steel actually last longer submerged in the salt water, than just above it where air can get at it.
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