Chevrolet Low Cab Forward 2016 Manual page 360

Usage
Engine Coolant
Engine Oil (Diesel Engine)
Engine Oil (Gasoline Engine)
Power Steerig Fluid
Rear Axle
Rear Axle
(Limited slip differential (LSD))
Windshield Washer Solvent
50/50 mixture of clean, drinkable water and use only DEX-COOL
See Engine Coolant 0 254.
Engine oils with the letters CJ-4 are required for your vehicle. The CJ-4
designation can appear either alone or in combination with other American
Petroleum Institute (API) designations, such as API CJ-4/SL. These letters
show API levels of quality. To determine the preferred viscosity for your
vehicle's diesel engine, see Engine Oil (Diesel) 0 243 or Engine Oil
(Gasoline) 0 248.
Engine oil meeting the dexos1
grade. ACDelco dexos1 Synthetic Blend is recommended. See Engine Oil
(Diesel) 0 243 or Engine Oil (Gasoline) 0 248.
®
DEXRON -VI Automatic Transmission Fluid.
Multi purpose gear oil SAE80W-90 GL-5, SAE90 GL-5
Multi purpose gear oil SAE80W-90 GL-5, SAE90 GL-5 for limited slip
differential together with limited slip differential lubricant additive (GM
Part No. 88900330) or equivalent.
Automotive windshield washer fluid that meets regional freeze protection
requirements.
Service and Maintenance
Fluid/Lubricant
specification of the proper SAE viscosity
359
®
coolant.