I flushed mine with gasoline several times until it cleared up, then with the top off and the PTO cover off I sprayed the internals down with brake cleaner. With the clean interior I could see that the guts were in good shape, after it was back in the truck I filled it from the top and put the shift tower back on.
1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy
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