They have a sale at the Cdn. Walmart stores on Valvoline Synpower 5w30/10w30 for only $19.00 for a 5 litre jug. Thats a great value at $3.80/litre. This oil has a ACEA A1/B1 rating. What do these ratings mean? Mobil 1 has a ACEA A5/B5. Some others have a A3/B3 rating.