Engine Oil Recommendations; Coolant Recommendation; Fuel System; Hydraulic Oil - Generac Power Systems MAC 750F Owner's Manual

General Information

Engine Oil Recommendations

Genuine Generac parts are recommended for all
maintenance items. Generac oil kits include both the oil
filter and air filter, and can be obtained through any IASD.
All Generac oil kits meet minimum American Petroleum
Institute (API) Service Class CJ-4/SM. Select the
appropriate viscosity oil grade according to the expected
operating temperature. Synthetic oil also can be used in
the appropriate weight as standard, once the engine has
been broken in. Once synthetic oil is used, it should be
used for the life of the unit. It is not recommended to go
back to a mineral oil. Do not use special additives.
Engine oil capacity (including filter) is 15.85qt (15L).
NOTE: For temperatures below -13°F use SAE 5W-30.
For more information, see the engine manual.

Coolant Recommendation

Where the atmospheric temperature falls below freezing,
the cooling system should be drained after engine
operation. To eliminate the need for repeated draining
and refilling, the use of a 50/50 Ethylene glycol base
antifreeze/water mix is recommended. Never exceed a
60/40 antifreeze/water mix.
Freezing Point °F (°C)
(-16)
Coolant (% Volume) 30
Water (% Volume) 70
Coolant capacity is 6.3 qts (6L).
For more information, see the engine manual.
6
3 -13 -31 -58
(-25) (-35) (-50)
40 50 60
60 50 40

Fuel System

The heater is designed to operate with diesel fuel.
Fuel tank is 160 gal (605.67L) with 152 gal (575L)
usable.
IMPORTANT NOTE: Comply with all laws regulating
the storage and handling of fuels.
Follow these guidelines:
•
Use only ultra-low-sulfur diesel fuel
• When temperatures are at or below freezing, use
No. 1D diesel fuel.
• When temperatures are above freezing, use No.
001577
2D diesel fuel.
• In some areas of the country, Climatized Fuel—a
mixture of 1D and 2D, may also be used.

Hydraulic Oil

Type: Exxon Mobile DTE-10 ISO VG 68 hydraulic oil
System capacity: 25 gal (94.64 L)

Trailer Towing Guidelines

Owner's Manual for Flameless Air Heater