When to do first maintainence on fresh 4l60e rebuild?
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How long before the first fluid and filter change on a fresh beefed up 4l60e build? Parts include beast sunshell, transgo boost valve, PWM elimination, alum. accumulator pistons, BW clutches and band, and vette servo. Was filled with fresh Dex III and Lubeguard Red additive as recommended by the builder.
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