1979 C6 Royal Purple and AMS Oil ATF
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1979 C6 Royal Purple and AMS Oil ATF
What do you think about using the Royal Purple or the AMSOil equivalent in a 1979 C6 tranny? It is in a F150 with a 460, concerned with using a full synthetic fluid in a transmission that old. Let me know what you think and if you have experience with using either one.