Depends on what you buy. My older Dodge Cummins powered trucks... I have clocked pretty close to the million mile mark. Been towed 4 times... Started driving them in '96.
Wow almost a million miles.. That's like two trips to the moon and back. Boy you guys on the mainland can really rack up the miles.. It would take a hundred years to get that here.. ha!
As for the rust problem here, check out the photo of the wiper transmission I changed two years ago... Totally rusted out to the point of failure. (yellow ovals) Their both after market but their not the same design. The old one on the top is rusted threw on every weld. The new one on the bottom has no welds like that except on the motor mounting plate. (Red small ovals) So I coated it and the whole unit with 3M rubberized undercoating. Then I sealed the seam where the motor plate meets the cross member with some of that aluminum duct tape. (White striped area)...
It's not over yet. the wiper arms didn't fit the newer different after market brand trany.. DOH!! Soooooo I had to carefully bore out the wiper arms splines so they would go on all the way and lock into place. Whew, scary, I'm not used to modifying NEW PARTS so they fit. Wonder what that does to the parts warrantee.....
Ok on to the coolant leak.
I replaced the thermostat housing and that solved the problem. There was indeed a leak in the upper seam of the unit. You see the unit is made from two parts. The upper part and the lower part. The two are (I believe) sonically or if you will, radio waved with a microwave frequency to weld the two together. After time, and all the heating and cooling, the seam starts to leak. Photo # 2112 red oval..
Note the red rust stains in the interior. That's what gave it away.. See the rust stain on the outer seam? Bingo! That's the leak...
My neighbor is as happy as a mynah bird in a palm tree. Now he can get her legal with a Safety Check and then his mission continues, nice! Good for him; I'm glad...
Hopefully I can fly tomorrow with the light winds.... I like light winds. Except the hot humidity that come with it............>>>>>>>>>>>>