Originally Posted by christosar
what is the point of XW-40 when 0W-40 and 5W-40 included in 0W-X and 5W-X? i understand 0W-30 0W-40,5W-30 5W-40,10W-30 and 10W-40(and maybe more).
Because they specify cold temperature parameters for the 0W-XX and 5W-XX requirements and hot temperature for the XW-30 and XW-40 grades.
Originally Posted by christosar
does mb229.3 require pv1449?
Yes. In
this copy of the Afton handbook if you look at page 120 it is there. This handbook is somewhat out of date though so shouldn't be relied on for the latest information.
Originally Posted by christosar
where can i find these documents? i only have afton handbook
You probably can't find them, they are not pulished to the public.
Originally Posted by christosar
the europe's vw502/505 list includes 10W-40 oils, the usa's dsn't!
How old is the Europe list you are looking at?