
Well, if we compare these 5w30 n 10w40 semisynthetics,
Which is having better protectiom at high temps???
Specs show that , 5w30 has better viscosity index and flash point and 10w40 has only higher viscosity, no other spec is better than 5w30. So which specs do better measure the protection at high temps???
Sent from my SAMSUNG-SM-N900A using Tapatalk
