Just taking the drawbar out every month or so and cleaning it up and/or hosing it down with WD40 has worked for me for 30+ years...
Most of the time I'm swapping drawbars around enough anyway for different trailers it isn't a problem.
As for welded receivers and metal strength some may be be heat treated after welding, so no telling what one is doing to the properties using a lot of heat or welding on it...I know at least one receiver I've had over the years had a label it was heat treated and don't weld on it...
Most of the time I'm swapping drawbars around enough anyway for different trailers it isn't a problem.
As for welded receivers and metal strength some may be be heat treated after welding, so no telling what one is doing to the properties using a lot of heat or welding on it...I know at least one receiver I've had over the years had a label it was heat treated and don't weld on it...
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