Volvo VAH 2013, Operator'S Manual, Page: 80 / 175

76 Operator's Manual Vehicle Maintenance VN,
VHD
Supplemental Fuel Enhancers
CAUTION
Supplemental additives are not recommended because of a high risk of injection
system problems or engine damage.
There are many aftermarket products available today which are intended to be added
by the customer. They generally increase operating cost without providing benefits.
Included are a variety of independently marketed products which claim to be:
•
Cetane improvers
•
Emission control additives
•
Detergents
•
Combustion improvers
•
Smoke suppressants
•
Cold weather flow improvers
Note: Repair expenses resulting from malfunctions in the fuel system or with engine
components when fuel enhancers have been used are not covered under warranty.
Some fuel additives can be used to provide temporary relief, but they do not replace
good fuel handling practices. These products can be used:
•
Isopropyl Alcohol Use 1/2 liter per 450 liters (1 pint per 125 gallons) of fuel for
winter freeze-up protection.
•
Biocide For treatment of microbe growth or black slime. Follow manufacturers
instruction for treatment.