Hydraulic Steering Fluid
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ANY NON-APPROVED FLUID MAY CAUSE SERIOUS
DAMAGE TO THE STEERING SYSTEM RESULTING
IN POSSIBLE LOSS OF STEERING, CAUSING
PROPERTY DAMAGE, PERSONAL INJURY AND/OR
Due to recent upgrades in our steering system components,
SeaStar Solutions recommends use of SeaStar Steering Fluid ONLY
in our hydraulic steering systems. SeaStar Steering Systems have
been engineered and validated using our proprietary SeaStar
Hydraulic Steering Fluid. SeaStar Steering ﬂuid is engineered
with a special additive package that contains anti-foaming and
anti-rusting agents, anti-oxidants, viscosity stabilizers, corrosion
inhibitors and wear additives as well as water emulsiﬁcation
additives. It is highly recommend that SeaStar Steering Fluid be
used to ensure optimum system performance and safety.
Use of any non-approved ﬂuid may result
in the following;
• Higher steering effort, particularly at ambient or lower
temperatures and/or over time due to oil degradation
• Increased steering slip and/or drift resulting in lost
• Foaming or air entrainment causing a bumpy feel
• High rates of moisture absorption causing internal
• Scratched steering cylinder bores and shafts due to
contamination or elevated wear rates
• Seal degradation – incompatibility with various
proprietary seal compounds used in our products
In an emergency, SeaStar EPS Fluid, any MD-3/4 rated ATF or MIL-PRF-5606H equivalent ﬂuid that is ﬁltered through
a ﬁne mesh screen can be used. The system MUST be thoroughly ﬂushed as soon as possible with genuine SeaStar
Steering Fluid after using an emergency ﬂuid. In an EXTREME emergency, any non-toxic, non-ﬂammable ﬂuid that
is ﬁltered through a ﬁne mesh screen may provide temporary steering.
Use of non-standard ﬂuids will require an immediate and complete system ﬂush
using approved ﬂuids, by an approved steering technician.
NEVER FILL OR MIX BRAKE FLUIDS, TRIGYCERIDES OR POLYALKYLENE GLYCOLS
WITHIN A HYDRAULIC STEERING SYSTEM.
SeaStar Hydraulic Steering Fluid can be used in Hynautic, BayStar and BayStar
Plus steering systems.
Help protect your boating environment by ensuring that all used oil is disposed
Optional Filler Kit
Part # HA5438
STEERING - Hydraulic Steering Fluid