1998 GMC ENVOY oil additives

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Page 260 of 386

GMC ENVOY 1998  Owners Manual As shown in the chart, SAE SW-30 is best  for your 
vehicle.  However,  you can use 
SAE low-30 if it’s going 
to be 0°F (- 18°C)  or  above. These numbers on an oil 
container  show its viscosity

Page 377 of 386

GMC ENVOY 1998  Owners Manual Engine (Continued) .............................. 6-9 
Exhaust 
..................................... 2-24 
FanNoise 
................................... 5-20 
Identification 
........................