1994 GMC Jimmy Owner's Manual - Page 247

You should also usethe proper viscosity oil for your vehicle, as shown in the following chart: I RECOMMENDED SAE VISCOSITY GRADE ENGINE OILS 1 FOR BEST FUEL ECONOMY AND COLD STARTING, SELECT THE LOWEST SAEVISCOSITY GRADE OIL FOR THE EXPECTED TEMPERATURE RANGE. HOT WEATHER F LOOK FOR ONE OF THESE LABELS C k100 - - +38 * +80 +27 +60 - - +16 +40 +20 - .+4 .-7 0- .-18 SAE 1OW-30 IF NEITHER SAE 5W-30 NOR SAE 1OW-30 GRADE OILS ARE AVAILABLE, SAE 30 GRADE MAY BE USED AT TEMPERATURES ABOVE 40 DEGREES F (4 DEGREES C). DO NOT USE SAE 1OW-40, SAE 2OW-50 OR ANY OTHER GRADE OIL NOT RECOMMENDED SAL SW-30 PREFERRED COLD WEATHER As shown in the chart, SAE 5W-30 is best for your vehicle. However, you can use SAE 1OW-30 if it's going to be (-18°C) or above. These 0°F numbers on an oil container show viscosity, or thickness. Do not use its other viscosity oils, such as SAE lOW-40 or SAE 20W-50. If you cannot find oils with the new "starburst" symbol the front of the on container, you should look for and use oils containing the following three things: 6-11