actually A+ is not fully synthetic as i ve used myself before on my previous car, on the other hand m using fully synthetic shell ultra for last 2 years n always changed oil at 7-8k km was using Zic XQ but its hard to get original XQ nowadays n for my markx i used liqiu moly synthoil fylly synthetic 5w40...always check oil at 5k to see if it still gud to go for another 2-3k km.....even at 7k oil changed theres stickiness of oil.....in US fully synthetic can run upto 15k miles which is quite a lot for Pakistani environment but i think max u can go upto 8k why m saying coz even Audi dealer told me to bring my dad Audi A4 to change oil at 7k km so i think its better to get fully synthetic as they also use fully synthetic oil.....rest is upto u if u change at 5k theres no harm btw do check some threads on imported oil to get more info on fully synthetic oil n their usage time.
