Castrol CDX 30 is a premium alkaline system lubricant suitable for use in the crankcase of low speed marine
crosshead engines.

CDX 30 is primarily designed for use in modern, highly rated marine crosshead type diesel engines, including the latest
generation of “camless” or electronic engines.

• Good demulsibility, water tolerance and separation with regard to seawater and fresh water ingress.
• Good thermal stability and oxidation resistance which are of particular importance with oil cooled pistons.
• High level of corrosion resistance against contamination from fresh water and sea water.
• Excellent load carrying properties (requirements when engine applications includes booster and power take-off
systems).
• Detergents to maintain piston and crankcase cleanliness.
• Excellent hydraulic oil properties when used in the operating systems of the latest “camless” or electronic engines.

CDX 30 is approved as a system lubricant by all major manufacturers of crosshead type marine diesel engines and by
leading stern tube manufacturers.

All packages should be stored under cover. Where outside storage is unavoidable drums should be laid horizontally to
avoid the possible ingress of water and the obliteration of drum markings. Products should not be stored above 60°C,
exposed to hot sun or freezing conditions.