25W-40 FC-W 4-Stroke Catalyst Oil, 5 Qt. | 18-9400CAT-4 Onan

25W-40 FC-W 4-Stroke Catalyst Oil, 5 Qt. | 18-9400CAT-4 OnanSierra 18 9400CAT 4 4 stroke catalyst oil is approved for all 4 stroke applications including outboard, sterndrive, and inboard. It provides superior corrosion protection under extreme conditions as well as industry leading deposit control. Meets modern recreational 4 stroke engines with or without emission catalyst systems Approved for all 4 stroke applications including Outboard, Sterndrive and Inboard. Exceeds all 4 stroke requirements including FC

fuel reserve

This 4-cycle oil blended with premium grade synthetic and mineral based stock features superiorly designed additives formulated for the stress endured by sterndrive and inboard engines

For use with digital or analog engines

Sierra 18-9554-4 is specifically formulated for the heavy duty inboard marine market

For: All Mercury/Mariner outboards using clip on type disconnect at engine ends & 1/4" I

Sight Gauge

Applicable on all high HP 2-Stroke and 4-Stroke Yamaha engines

Exceeds all 4-stroke requirements including FC-W and FC-W Cat Compatible

above deck installations

It is NMMA FC-W/API-SL certified and approved for all 4-stroke applications including outboard

10" (993mm)

Hole Size: 2