LAMP GP-HEAD & SIGNAL 1054849 - Caterpillar

When an engine is started and operated in ambient temperatures below -20 °C (-4 °F), use multigrade oils that are capable of flowing in low temperatures.These oils have viscosity grades of SAE 0W or of SAE 5W.When an engine is started and operated in ambient temperatures below -30 °C (-22 °F), use a synthetic base stock multigrade oil with a 0W viscosity grade or with a 5W viscosity grade. Use an oil with a pour point that is lower than -50 °C (-58 °F).The number of acceptable lubricants is limited in cold weather conditions. Caterpillar recommends the following lubricants for use in cold weather conditions:
First choice: API CG-4 or API CF-4 oils with a SAE 0W20, 0W30, 5W30, or 5W40 viscosity grade.
Second Choice: If the First Choice oils are not available, the following viscosity grades of oils with a CG-4 or CF-4 additive package can be used: SAE 0W20, SAE 0W30, SAE 5W30 and SAE 5W40. However, use of these oils is not recommended.
Shortened engine service life could result if second choice oils are used.