Found this surface rust the other day

[ThatSickRIp]

Was under the 4Runner because I had dropped the valve stem cover checking tire pressure, and it rolled under the truck. When I went down to get it, I saw some rust out of the corner of my eye.
We drove it on the beach at Chincoteague beginning of October and I washed the undercarriage after. Apparently not washed enough.
So should I wire brush it and spray some Rustoleum? Or is there a better product yall would recommend?
Going to climb under the rear and check it out as well.

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[gvan1998]

Normal

 

[axxman]

First, I know this does not help but this is normal. I feel your concern but that is the lower control arm knuckle, the surface rust will develop there but rest assured it will not go beyond that, I see no arm in sanding it off and painting the surface, I would just caution that you are close to the brakes there, so you need to make sure whatever you do, that it stays in the area you want covered. you don/t want to get that on the brakes or brake sensors. remember that is a suspension part, it moves up and down really really fast, every bump.

I salute you for wanting the suspension to be pristine but this is indeed normal. I think there is some paint you can get (toxic) called encapsulation paint that you can paint on the rust and it will basically seal it up. I look forward to reading other optinions on this matter.

On another note, that part will get replaced in 100k miles or so when you change out the lower ball joints.

Cheers, and your 4runner looks good from underneath.

 

[jcash25]

The Japanese call that patina.... it'll be ok bro.

 

[Nodak]

wow never notice that a strikethru on the user name means banned

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