Af dearer than AG because there's more fords on the road ;)
LOOK!... shell make a multi vehicle oil.... it's no different from the AG AF BS... it just makes it easier for armchair mechanics to understand ;) http://rotella.shell.com/products/shell-rotella-t6-multi-vehicle-5w-30-full-synthetic-heavy-duty.html
I give up.... you're beating me with stupidity...
This isn't Castrol oil...🙄
No you do not! if anything the AG is a better oil.... Castrol don't make much 'specific' oil ;) oil really is oil... it's the viscosity that can make a difference... do you really think when you go for a service at a garage that they give you car specific oil?? LOL been in the motor trade over 30yrs... your comment based on???