The thing to realize about WD-40 is that it was developed to displace water and then evaporate at a later point. While you can spray something, say a rusting section of steel tubing, and it will displace any moisture that is present in the rust and wherever it creeps, it will not act as a barrier or a protectant against future moisture intrusion because of it's volatility. It might stick around for a few days or a week or so, but beyond that, forget it.
If you know what West Texas pinstripes are, a handy preventative measure is to wipe the truck down with WD#40 pre-excursion. Amazing how the scratchy stuff just slips along the body with a good layer of WD. Yes, you’ll collect some dust, but it comes off super easy at the next wash. Go for the 1 gallón can, no aerosol. Hit those wheel wells too if you think some sticky clay mud might be a possibility.
If you already have the West Texas pinstripes in effect, and you need to sell your rig…go straight back to the WD.Great temporary scratch-hider from archaic lowrider times.😜
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