Another thing that might work well is "Magnum Steel". It's an epoxy that has the cosistancy of modeling clay. Auto parts stores have it and it comes in a container about the size of a rolls of quarters. You cut off a piece with a knife and roll it around in your fingers to mix the two epoxies, then just stick it on. You'll have to have all the oil cleaned off first but this stuff really sticks and gets almosty as hard as steel.... sets fast.

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1985 300D Turbo ~225k
2000 F350 (Powerstroke) 4X4, SWB, CC, SRW, 6spd ~148k
1999 International 4900, DT466e (250hp/660 ft/lbs), Allison MD3060 ~73k