Went to Tesco Petrol station in Bristol yesterday to pick up Motor OIl and saw this under reduced to clear.
Castrol Motor Oil GTX for Diesel 4 L at 7.98£ reduced from 12£ 10w40
Castrol Motor Oil GTX for Petrol 4 L at 7.48£ reduced from 11.48£ 10w40
Tescos Mineral Motor Oil 15w40 4 L - 4.98£ both Diesel and Petrol
The smaller cans of 2L were more expensive than the 4L ones.