Power Up Fully Synthetic Guard Tech 0W-40 SN/CI4 SN helps to sustain improved performance for longer, even when under pressure, helps to maximise short and long term engine performance, delivers excellent levels of protection across a variety of driving conditions and temperatures and reduces engine deposits to help maximise engine response. 0W-40 SN/CI4 is PAO and Ester based, hence it is suitable for high performance usage as well as for good pick up power.