Specifications

Preservatives 35

5 Preservatives

Requirements

The MTU conditions for preservative approval are specified in MTU Factory Standards

(MTL). The following standards are available:

• Initial-operation oil and corrosion-inhibitor oil, MTL 5051

• Corrosion inhibitors for external preservation, MTL 5052

The preservation product manufacturer is informed in writing if his product is approved by MTU.

Types of Preservation

See Preservation Specification, Chapter 8 (→ Page 77)

Initial Operation Oils and Corrosion Inhibiting Oils for Internal Preservation

SAE 30 viscosity grade corrosion inhibiting oils are to be used for internal preservation (oil-

moistened components) of MTU engines and gearboxes.

These oils may also be used for running-in and acceptance testing procedures. Some are also

suitable for continuous operation, see Chapter 6 (→ Page 37).

Corrosion Inhibitors for External Preservation

For external preservation, all non-painted parts are to be treated with a corrosion inhibitor providing

a wax-like protective coating after the inhibitor solvent has evaporated.

Corrosion Inhibiting Oils for Internal Preservation of the Fuel System

Fuel injection-pump test oil conforming to DIN ISO 4113 is to be used for internal preservation of the fuel

system. The engine should be run with these oils for the last 10 minutes before shutdown.

Preservation can also be effected using diesel fuel to which approximately 10-12% corrosion-

inhibitor oil for internal preservation has been added.

TIM ID: 0000010138 – 003