Asda have no less than four different types of 5W-40 fully synthetic oils for petrol and diesel vehicles. The cheapest (5litres) was £19 going up to...wait for it...£32 for Volkswagen/Skodas. Can anybody tell me why this is and would it make any difference to performance/longevity for me to just use the cheapest fully synthetic. I only do around 10k a year and poodle around the place. Comments please
Regards
AJ
Regards
AJ