Sorry I don't have experience with your 65, but I do have a great deal of experience with hydraulics. Hydraulic cylinders will bleed themselves when the system is operated from open to closed , it may take several times. Note it maybe jerky until the air is bled off. Then re-check your fluid level. About the fluid I have never know power steering or automatic transmission fluid to hurt these things. They both have anti-foaming additives needed for most hydraulic systems.