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Rust Bullet or POR-15 your car against rust!

May 28, 2010

The single most thing most thing I hate when it comes to cars even more then electrical gremlins and torn timing belts (on interference engines) is rust.

Being from Ontario, we have cold snowy winters where salt is lathered liberally EVERYWHERE.  This will rust your car an exceptional amount in just one winter let alone 20+ if you have an e30. Below you will see what a not-so-bad or even fairly good condition E30 looks like here in ontario… and even then its rusty. You can undercoat all you want but places like under the carpets will always continue to rust from the inside out. What my opinion is to everyone is to take some time and take your car off the road to tear it completely down so you can see all the metal and to coat it all with a rust inhibitor such as Rust Bullet or POR-15. This stuff can even go over rust it “kills it”, HOWEVER I highly recommend doing it the right way which is to cut bad metal out weld new metal in then coat it.

For a comparison between the brands go here: http://www.drjing.com/Mini/BLOG/SideBySide.htm

My preference is Rust Bullet as to me it seems the strongest and takes very little prep. However POR-15 has amazing reviews also.

These pictures are courtesy of “DR.ZED” on www.maxbimmer.com

This is what a relatively good condition (Ontario style) E30 floor looks like with the carpets off:

After Rust Bullet:

2 Responses to Rust Bullet or POR-15 your car against rust!

  1. Rey on September 8, 2010 at 3:17 pm

    Great write-up and review! I’m looking to do this to my car this fall, any suggestion to how much Rust Bullet is needed to cover the interior floor pan?

  2. admin on September 9, 2010 at 12:45 am

    They say to do two coats, they also say a gallon can cover about 400 square feet per coat. I would recommend covering the inside of the trunk too (engine bay too but that takes lots of time if the engine is still in). Minus the engine bay the car is about i would say about 10 feet long ( about 14-14.5 foot total), and 5.5-6 foot wide.

    So thats roughly ~90 square feet you have to cover in one coat. Could probably get away with half a gallon probably.

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