Whats the quality comparison between Mobil Super 1000 15w40 Mineral vs Castrol GTX 15w40? I noticed the Castrol can be had for rm80-90 while Mobil goes over rm100.
Also I did recently made an enquiry at a spare parts shop where Mobils 15w40 Mineral sells for rm110 while the Mobil Semi Synthetic 10w40 sells for rm140. It would seem that Mobils semi synthetic only supersede their mineral by rm30, which is negligible if the semi synthetic does offer way more protection/durability. Is the semi synthetic worth it? And why would it just differ from their mineral grade by a mere rm30, which seems such a small difference.
This post has been edited by surianti: Mar 10 2023, 12:30 PM
Engine Oil Reviews/Technical talk v2, Everything Automotive lubricants/fluids