Definitely ATF. And, since yours are spring covered, it means someone replaced them in the not too distant past. The originals were not spring covered - the spring covers are an update to protect them from your A/C compressor belt in the event of a collapsed motor mount.

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1979 300D 040 Black on Black - 1985 300D Maaco job (sadly sprayed over 199 Black Pearl Metallic) on Palamino

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