Group 177 Specifications DETROIT DIESEL ENGINES For further information concerning component specifica- tions see service information in Group 1, “Oil and Filter Change Intervals for Volvo Components,” publication number 175–001, and appropriate vendor literature. The use of fuels with a sulfur content above 0.5% by weight will require more frequent oil changes. Refer to Detroit Diesel Publications for details. More frequent oil changes are also required if the engine is operating in a dusty environment or if frequent stops and starts are made (see oil change interval below). Oil filters should always be changed when changing oil.
Supplemental coolant additives are recommended for all Detroit Diesel cooling systems. Antifreeze alone does not provide sufficient corrosion protection for heavy duty diesel engines. Note: The Detroit Diesel Engine is installed in earlier VN vehicles (from 1996–2000) only. CATERPILLAR ENGINES For further information concerning component specifica- tions see service information in Group 1, “Oil and Filter Change Intervals for Volvo Components,” publication number 175–001, and appropriate vendor literature. Caterpillar does NOT recommend an automatic exten- sion of oil drain intervals with high quality oil, low sulfur fuel and non-severe duty driving.
Oil drain intervals can only be extended with an oil analysis program containing the following elements: oil condition and wear metals, trend analysis, fuel consumption and oil consumption. In areas where fuel sulfur content exceeds 1.5%, choose an oil with a total base number that is within the API CF-4 or CG-4 categories and shorten the oil change pe- riod based on oil analysis. Shorter oil change intervals are required if the engine is operating in a dusty environment or if frequent stops and starts are made (see oil change interval below). Oil filters should always be changed when changing oil. Supplemental coolant additives are recommended for all Caterpillar cooling systems.
Antifreeze alone does not provide sufficient corrosion protection for heavy duty diesel engines. Note: Caterpillar Engines were installed in later model VN vehicles (from 1996–1999) only. 11