We recommend using Redline MT-90 transmission fluid for your FC3S.  This is a synthetic-based lubricant with special additives for synchronizer transmissions; Redline recommends their MT-90 for the FC3S.

Other quality synthetic transmission oils are made NEO Synthetics and Royal Purple.

Redline - http://www.redlineoil.com/
Pics Description Summit Racing
part number
  • Redline MT-90
  • 90W manual transmission fluid
  • 3 quarts required per transmission
  • RED-50304 $7.95/quart
    Summit Racing
    Hazardous materials shipping fees appliable if ordering from Summit Racing.

    Questions?  Comments?  Send mail to:  reted@fc3spro.com