calvin9853

Thank you! Just to clarify. If I understand you correctly. I can mix the BP Autran (4 gallons) with the residual Dexron III ( 7 gallons ) that will still be in the system after I drain the 4 gallons from the Hydraulic Reservoir and change filters. . There is no problem mixing the old Dextron III with the new BP Autran Sun 295? Thanks

My motor coach hydraulic system calls for Dexron III. The hydraulic system runs both the power steering and the side radiator fan. I want to drain out four gallons of the old Dexron III and replace the filters. Can I mix 4 gallons of Dexron VI with the remaining 7 gallons of Dexron III that will still be in the system? I read somewhere that Dexron VI is not compatible with Viton seals. I don't know if the hydraulic system has any Viton seals or not, but I don't want to cause any damage. Or, I have several gallons of BP Autran Sun 295. Would it be better to mix that with the old Dexron III? Confused.

I have a hydraulic system in my motor coach that calls for Dexron III. Can I use Dexron VI? I read somewhere that Dexron VI is not compatible with Viton seals. I don't know if the hydraulic system has any Viton seals but I don't want to take a chance if this is true. The hydraulic reservoir fluid runs both my power steering and my radiator fan. I want to change filters and put in four gallons to refill. The system holds 11 gallons. Can I mix 4 gallons of the Dexron VI with the Dexron III in the system, assuming it does no harm to the seals? Thank You.