Originally Posted by wdn
Toyota had a problem and they took care of. On my Gen 1 Tundra when it was 9 years old and me as 2nd owner I get a letter from Toyota come bring in your truck, with 100K miles on it, and they took off the bed, stripped off every bit of rust on the frame and then rustproofed the frame and filled the frame tubes with a wax like rustproofing, and the exterior with black coating. Now think about that. They did that for my truck... at no cost to me.
My truck is now 15 years old and still a daily driver. Six winters later parked outdoors and another 50,000 miles and the Toyota rustproofing has held up remarkable well. And there is no body rust on the vehicle whatsoever. I see plenty of Ford and GMC pickups here in the frozen north much younger than mine, with rusted out rockers, bumpers, wheel wells rotting off, rotten tailgates, etc. I recently did the whole undercarriage of my Tundra with Corroseal paint because not everything under there is 'frame'.
I'm not sure what this post is about? Your car had corrosion issues to the point of having a frame recall and you spin that into a positive, then you critique GM's sheet metal corrosion resistance? I'd rather have rusty sheet metal than a rotten frame, wouldn't you? Keep drinking the Kool-Aid, buddy.
I don't think you need to spray the underside of your car with a garden sprinkler, oil spray once per annum is enough. Not all cars are equally as corrosion resistant.