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I have a tiny leak on a custom made oil pan near a welding bead. How heat resistant is JB Weld as a means of fixing such? Thanks
 

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Have found many uses for it. Found this on the JB Weld site.
Q: How much heat can J-B Weld withstand?

A: J-B Weld (Part # 8265-S, 8265, and 8280) can withstand a constant temperature of 500 degrees F. The maximum temperature threshold is approximately 600 degrees F for a short term (10 minutes).
 

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I have used it on an oil pan also, worked great;
just make sure the area is very clean. My son
used it to repair a cracked block in an old 390
in a Ford pickup. Was not leaking & still running
good when he sold it.
 

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I used it to fix a leak(well, more like the grand canyon, thing corroded from the inside out) in a water pump on a GTO I used to have as a daily driver. Never had a leak after that, still holding when I sold the car a couple of years later.
Russ
 
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