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Why does everyone grind their battery tray bolts instead of just soaking them in vinegar for 2 days?
I picked up a 1968 Chevelle in Phoenix back in March and the battery tray bolts were fused solid with 50 years of acid crust. Every forum thread said to hit them with an angle grinder, but my neighbor Dale said to pull the tray and soak the bolts in white vinegar for 48 hours. I tried it and they came out by hand with a 3/8 wrench, no heat, no sparks, nothing. The vinegar ate through the rust and left the threads totally fine, and I only spent $2 on a jug at the grocery store. I know grinding is faster if you don't care about saving the hardware, but these were original bolts with the head markings still readable. Am I missing something about why grinding is the go-to answer? Has anyone else had luck with the vinegar soak on crustier stuff than battery trays?
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the_jake27d ago
Vinegar ate through the rust," now try it on exhaust manifold studs, way worse than battery bolts.
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