Air causes play
Spongy or slow steering often means air in the system; bleed it with the maker’s procedure.
Do not mix fluids
Mixing fluid types can damage seals; drain and refill if you are unsure what is in it.
MARINE EQUIPMENT
Boat hydraulic steering fluids and lubricants.
Hydraulic steering fluid selection, filling, and bleeding guidance for outboard and inboard boat helms and steering cylinders.
Questions: [email protected] · Every AMSOIL link on this page carries dealer #30734402.
Fluids by compartment.
Confirm the fluid type, grade, and specifications in the boat hydraulic steering maker’s manual before ordering. These examples are not a fitment result for a specific machine.
Helm and cylinder fluid
Steering makers list their own fluid, and some permit a specific ATF or hydraulic oil. Use exactly what the helm label lists.
Transmission fluid
Signature Series Multi-Vehicle Automatic Transmission Fluid
Signature Series Multi-Vehicle Automatic Transmission Fluid for compatible automatic transmissions. Verify the transmission-specific application list.
Product details Shop at AMSOIL ↗
Hydraulic & tractor fluids
ISO 22 Anti-Wear Hydraulic Oil
ISO 22 Anti-Wear Hydraulic Oil for compatible hydraulic or tractor systems.
Product details Shop at AMSOIL ↗Cylinder rods and tilt tube
Grease support rods and the tilt tube where the maker directs.
Grease & assembly lube
Synthetic Water-Resistant Grease
A synthetic grease for compatible components exposed to water, including boat trailers and powersports equipment.
Product details Shop at AMSOIL ↗ORDER THROUGH INDEPENDENT AMSOIL DEALER #30734402
Ready to order, or have a question first?
Shop AMSOIL directly with Jeff’s dealer number already attached, or open a business account. AMSOIL handles pricing, checkout, and shipping. If you contact AMSOIL another way, give them dealer number 30734402.
Prefer to talk it through? Email Jeff at [email protected] with your equipment, the fluid now in use, and your approximate volume.
Frequently asked questions
What fluid goes in boat hydraulic steering?
The fluid the steering maker lists on the helm or in the manual.
Can I use ATF in hydraulic steering?
Only if the steering maker permits it.
General maintenance information. Always follow the equipment maker’s requirements and the current product data. Product availability, pricing, and account terms are set by AMSOIL.
Industries that use this equipment
More marine equipment
Open a commercial account with dealer #30734402
https://www.amsoil.com/business-opportunities/get-a-commercial-account/?zo=30734402
Jeff Pittman · A1 Synthetic Oil · Independent AMSOIL Dealer #30734402 · Newport, Washington · [email protected]