[Formulajones]

Yep PVC is what I use for driveshafts, and fill with evaporust. Usually takes right at a gallon to fill.

If monitored carefully it'll bring back the stripes that weren't visible before due to the surface rust.

Here's one I did on one of the cars here. No stripes visible before treatment but after a day of monitoring they began to appear. Just have to be careful rinsing as it does make the paint "soft" so I let it dry a day after a light rinse and they harden right back up. Great way to restore or preserve a driveshaft as it retains it's proper color, and also retains the blueing from the welding process. Although there are ways to duplicate that too if you've already sandblasted or sanded the shaft.