As per title , Im looking for the cheapest 20w50 mineral oil, reason being I have just installed a second hand engine and want to run it for a 100 miles or so on some cheap oil to help clear out all the crap , then after put some good quality millers in or such.
Does anyone know whos selling the cheapest at the minute, I am sure wilkinsons did 5 litres for a £10 last time I was there.