Salam
I have a Mehran 2008 model. I'm currently using Shell Helix HX5 engine but have been facing oil reduction since last few oil changes. Mostly the oil used to reduce after crossing 2000km mileage mark but now its beginning to reduce at around 1500km.
Is it due to poor oil quality.? Or is it something with my engine? ALso there is a light amount of sludge (blackish color) built-up I saw on tappets when I got the car tuned. The mechanic told me that this is due to poor quality oil. Is it true?
I was thinking of shifting to SGO Premium SG grade oil but I've read some comments on the forums that this oil is only good for 2500km.
Any other better alternatives? Expert's opinions on my problem will be much appreciated.