Guardol® NG-D

Phillips 66® Guardol NG-D is a high-quality, dispersant-detergent engine oil
specially designed for use in vehicular natural gas and diesel engines. It is
formulated with optimal levels of anti-wear additives to meet the enhanced wear
protection requirements of diesel engine platforms as well as engines converted
to natural gas service. It is particularly recommended for use in transit buses,
school buses, delivery trucks and other vehicles equipped with Cummins, Detroit
Diesel, Volvo or converted CNG engines.

Guardol NG-D is formulated to provide outstanding oxidation and nitration
resistance to offer extended drain interval potential. It minimizes the formation
of sludge and deposits for good engine cleanliness, and protects against valve
stem deposits and valve seat recession, resulting in reduced maintenance and
extended engine life. It also has good resistance to foaming and aeration.