What replacement hydraulic oil do I use on my CMC Product? Follow For CMC Marine, please use the following numbers: Sales Phone: 800-654-3697Fax: 580-252-2970 Technical Support Phone: 580-252-1699Fax: 580-252-2970 Related articles Can I send in my unit for repair? How do I refill my CMC actuator with fluid? My CMC unit will run one way but not the other? CMC Owner's Manual CMC Returns and Warranty Submission Comments 0 comments Please sign in to leave a comment.