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wagon_train

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  1. wagon_train

    NV5600 fluid

    wagon_train replied to dobienut's topic in 2nd Generation Dodge 24 Valve Powertrain
    I have Royal Purple Synchromax and a bottle of the Mopar LS additive in my NV5600 for about 25,000 miles now, and so far so good. It seemed to help my 2-3 shifts when cold. I definitely hesitated when I was pouring the LS additive in, but no complaints and shifts good. I don't know if it is good or bad for the internals, but definitely feels better than the previous - which I believe was the Penzoil synchromesh.