On my regular run up to London I've found the premium fuels do give a better MPG. In my 2.5 litre BMW around + 4%.
Checking the BP website http://www.bp.com/modularhome.do?categoryId=6620&contentId=7009602 I see that's close to their test video claims.Also check out the video showing an Audi A8 with one bank of cylinders running on Ultimate and the other running on normal to compare engine cleaning properties.
adam
Checking the BP website http://www.bp.com/modularhome.do?categoryId=6620&contentId=7009602 I see that's close to their test video claims.Also check out the video showing an Audi A8 with one bank of cylinders running on Ultimate and the other running on normal to compare engine cleaning properties.
adam