Synthetic brake fluid

["Race Case Video" <racecase@oneimage.com>]

In my street Elan, I've always used Castrol brake fluid because
petroleum-based fluids were said to eat away the rubber seals.

I went to 3 auto parts stores and none carry Castrol anymore.  They now have
various brands of synthetic brake fluids.  Will those be okay or damage my
seals?

Your advise is appreciated.

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