When To Change Oil - Detroit Diesel DD15 EuroIV Operator's Manual

Table of Contents

How to Procedures

Cold Weather Starting

NOTICE: Monograde oils should not be used in the engine, regardless of

API service classification. Monograde oils gel at lower ambient

temperatures, reducing lubricant flow, and do not provide adequate lubricity

at higher engine operating temperatures resulting in severe engine

damage.

At ambient temperatures below -10° C (14° F), SAE 5W-30, 5W-40, or 10W-40

oils may be used, provided they are API CI-4 PLUS and have demonstrated field

performance in Detroit™ engines. These oils must possess a High Temperature /

High Shear Viscosity of 3.7 cP minimum.

Use of Synthetic Oils

NOTE: Synthetic oil does not permit extension of recommended oil drain

intervals.

Synthetic oils may be used in Detroit™ engines provided they are approved by a

POWER GUARD® Oil Specification (PGOS) 93K214. The use of synthetic oils

does not necessarily ensure the extension of the recommended oil drain intervals

beyond the limits. Synthetic oils offer improved low-temperature flow properties,

high-temperature oxidation resistance, and improved fuel mileage. However, they

are generally more costly than non-synthetic oils.

Product information about synthetic oils should be reviewed carefully. Performance

additive systems often respond differently in synthetic oils.

Use of Supplemental Additives

Lubricants meeting the Detroit™ specifications outlined in this publication already

contain a balanced additive treatment. Supplemental additives are generally not

necessary and can even be harmful. These additives may be marketed as either oil

treatments or engine treatments and are discouraged from use in Detroit™ engines.

Engine damage resulting from the use of such materials is not covered by your

Detroit™ warranty. Detroit™ will not provide statements beyond this publication

relative to their use.