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would anyone be willing to post a video to youtube just pointing and explaining how to do this? I don't want to ruin the car.
This is the best video I have seen. The guy explains everything. He works on Ford vehicles, but the concepts apply to our cars.
 
I got a 2020 XSE, drove on the day I got it straight from the dealership to Krown rustproofing. They are spraying it once a year ($120), drill small holes in the rocker panels, and spray there too, inside the engine bay and all over under the car. Very happy with them. I also have a 06 Jetta with 300k miles that goes once a year through the same process. Absolutely no rust on it, and we all know how bad some of the VWs rust. Krown gave me a lifetime warranty certificate for the new car (as long as you take the new car for the first application within 6 months of purchase, and you keep doing it once a year after that). Some police, firefighters departments and if I'm not mistaken the DOT in my area take their trucks to be treated at Krown. Just scroll down to this guy's postings:
 
the closest Krown is 6 hours from where I live.

It is dyi for me. Luckily there is not much rust in my car and I applied silicon grease to stop the rust. It is just surface rust.
 
Not sure if you're following any of the engine recall threads, but from my experience chatting with Toyota Canada (not US) today about warranties as I'm affected by the engine recall, I gathered this tidbit from my conversation that may be worth weighing for those in this thread considering aftermarket proofing:


-NOW this is where warranty might be affected should you need coverage down the line - for this example I'll use the comprehensive (3 year - 60,000km in Canada) - incl. 12v battery, electrical, misc items throughout the HYBRID vehicle

>any type of rust proofing done after the factory WILL void your comprehensive warranty AND hybrid electrical warranty as they can argue the chemical did damage etc.
>must remove any modifications done to the car before proceeding with any other warranty claims i.e: tires affected rotations of the axel and messed with the engine, LED shorted the wires and fried the fuse, etc. etc.
Worth reading up and getting an answer from Toyota head before proceeding and avoid footing an expensive bill down the line.
 
Not sure if you're following any of the engine recall threads, but from my experience chatting with Toyota Canada (not US) today about warranties as I'm affected by the engine recall, I gathered this tidbit from my conversation that may be worth weighing for those in this thread considering aftermarket proofing:




Worth reading up and getting an answer from Toyota head before proceeding and avoid footing an expensive bill down the line.
Good point. Toyota has to prove that the modifications or the rustproofing caused the damage that required warranty work (Magnuson-Moss Act). I have checked with Krown and they have told me that the only car manufacturer that voids warranty for rustproofing application is VW.
 
Here is thread form Toyota Nation forum that is addressing the rustproofing and warranty:
 
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