1995 Chevrolet S10 Pickup Owner's Manual - Page 227
1995 Chevrolet S10 Pickup Manual
Page 227 highlights
You should also use the proper viscosity oil for your vehicle, as shown in the following chart: RECOMMENDED SAE VISCOSITY GRADE ENGINE OILS FOR BEST FUELECONOMYANDCOLDSTARTING,SELECTTHELOWEST SAE VISCOSITY GRADE OIL FOR THEEXPECTEDTEMPERATURERANGE. HOT WEATHER / F + 100 . +80 LOOK FOR THIS SYMBOL - +3a - +27 . - +60 +40 - - +16 -+4 +20 - - -7 0. - - 18 I SAE 5w-30 SAE IOW-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 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 0°F (-18°C) or above. These numbers on an oil container show its viscosity, or thickness. Do not use other viscosity oils, such as SAE 20W-50. 6- 10