By: Ernest Nnagbo

Ernest Nnagbo — Sun, 31 Jul 2022 12:20:43 +0000

I think writer should have mentioned the performance classifications of the American petroleum institute or ApI
Those alphabets Sj-4 and SM-4 means a lot besides the temperature differentials in keeping the engine performance optimal

By: Louis R.

Louis R. — Fri, 27 Sep 2019 21:39:21 +0000

A quite important difference between an oil with a small viscosity interval and another one with a bigger viscosity interval (for instance a 10W30 vs a 10W40 oil like in this article) is the latter contains a higher amount of additives that usually do not last for a very long time. Therefore an oil could be better as it often lasts longer on condition that it is being used ia a too hot climate.

Comments on: 10W-30 vs 10W-40 Motor Oil (What’s the Difference?)

By: Ernest Nnagbo

By: Louis R.