Clinging molecules,protect from the start.

All cars, even those with latest stop-start engine technology cannot perform at their best in traffic congestion. And congestion has dramatically increased over the past 10 years, causing engine wear and wasting fuel. 

Suitable for the latest stop-start engine technology, Castrol MAGNATEC STOP-START combines DUALOCK molecules with our most efficient, fully synthetic base oils to dramatically reduce wear by 50%* and save up to 60L** of fuel a year in congested driving, thus ensuring non-stop protection from every start.

Castrol MAGNATEC STOP-START 5W-30 is a full synthetic lubricant suitable for use in petrol, diesel and CNG cars where the manufacturer recommends API SN, ACEA A5/B5 or earlier specification 5W-30 lubricant.

Tested versus the sequence IV A API SN wear limit. Tested versus the CEC OM646LA ACEA wear limits. 

Compared to an industry reference 15W-40 oil as tested in EUDC (for highway), EPA NYCC (for cities), and Castrol Ultra-idle cycle (for congestion). Assumptions: Annual mileage of 12000 km, representative split of driving (60% on highway, 30% in cities, 10% in congestion). Actual results under road conditions may vary according to vehicle type, driving conditions and style.