Rust on the Rear Axle Beam

Any "Road/Salt" up your way? ......

 

That's about right. Front end will be worse. Do you do an under the case rinse?

So sad......so easy to mitigate this.

 

that looks like possible a safety issue. i would open a file with nitsa.

sometimes toyota baffles me.

 

I wouldn't worry too much about it. You live on Longuylan.

That's right next to the Atlantic Ocean, and they salt the roads in the Winter.

The answer is to wire brush off the loose rust, treat it with a phosphate rust converter, prime and paint it with black paint. Spray cans are just fine.

My favorite.

The MSDS says it is 47% phosphoric acid.

 

That's right this is just surfaces.. Don't worry about it.

 

Heavy structural members are expected to get rusty during their life. That said, some of the rust looks significant, the first picture for example. Being second owner, I'd wager the car was neglected, not washed much, salty environment. How many miles on the odometer?

I'd get on it, get the car on a hoist, follow Mike's advice.

 

in this day and age, it's just not right that we need to get under a $30,000. car and scrape the rust off.

 

Rude person's is bang on. Follow his instructions. UK cars in general suffer the same, some more than others

 

I've used Rust-Mort.

Rust-Mort Products | SEM Products

Here's ours, roughly same point-of-view as your pic number four: bottom of rear suspension. We've got a fairly temperate climate, mild winters, so not that much road salt. And the car is garage kept, 49000 km's on the odometer.

 

The stuff is made here about fifty miles up the road from me, in South Carolina.

It is the same phosphoric acid conversion solution. I can get the Krud Kutter "Must for Rust" for $8 a quart at Lowe's any day. The Rust Mort costs about $30 a quart.

The only reason for buying the Rust Mort is that you can say that you're a "rust mortician."

The bolt is a failed "zinc phosphate" coating.

Prior to RoHS environmental regulations, bolts were plated with cadmium or zinc chromate. Cadmium and hexavalent chromium coatings were more rust resistant to corrosion, but have been banned for their toxicity to the environment.

 

Bolt failure, the story of my life...

 

mycnam - The corrosion in your pictures looks like the severe stuff that afflicts the cars my relatives own on Maryland's Eastern Shore. Atlantic sea air and high humidity can really do a lot of damage in a short time. As has been recommended, you should neutralize the existing corrosion ASAP and try to prevent future exposure to the conditions that cause it.

 

Those who consistently claim that "rustproofing" does no good, should pay attention to these post and just look at videos on TV when a car is flipped over.

Even with the mild weather, here in Upstate South Carolina, there is extensive rust all over the bottom of cars.

Just the appearance of no rust on the painted body doesn't mean there is no rust elsewhere.

 

Yes I use CSP like crazy. Best product ever. I hose the undercarriage down and no rust ever.

In LI i would hose the car down good with csp and not wash the undercarriage till spring
Because just like you said sqeeky clean metal and a little salt and it will rust like crazy.
Get it all greasy under there and happy car.
I grew up in VT and no one washes there car all winter there. And its brutal there.

Spray the hood latches door hinges throttle body spring hatch lock and hinges and spray some csp in the door key hole.

 

I've used different versions of this stuff for the last 45 years.

Transtar 4423 Amber Rustproofing 24 oz Aerosol Prevents Rust Free Shipping | eBay

I did my Prius"v" nearly three years, ago. There's not a speck of rust.

One unintended benefit is that the petroleum wax and mineral spirits base deters rodents and animals.

I did my 1998 Mazda MPV 16 years, ago. The bolts and parts come off like they were new. There are very few surface rusted places anywhere.

I will continue to do ALL of my future vehicles.