How long can you go between change-outs?

FUTERRA’s excellent oxidative and hydrolytic stability and near zero foaming tendency, ensure that the fluid will last much longer than other EALs and conventional oils.  Our testing shows that FUTERRA has oxidative stability* of 3 to 4 times longer than other EALs, thus resisting breakdown and extending the life of the fluid (*per RPVOT ASTM D-2270). Extending oxidation stability allows operators to significantly increase the time interval between change-outs. FUTERRA offers the only 10-year warranty for stern tube applications (restrictions apply).