Hi everyone, I didn't know in which section put this question and that's why I chose General Maintenance.
I had already asked this question in another topic but we were talking about something else ...
Simple and flat question. What is the difference between a 5w30 and 5w40 engine oil?
I have always known that 5w30 oils are made for fuel economy reasons and that replacing them with a 5w40 is always advantageous to protect the engine. I seem to have understood that this is not the case ..
I often hear that a 5w30 oil protects up to 30 degrees. I seem to have understood that this is not the case ...
thank everyone who would reply
I had already asked this question in another topic but we were talking about something else ...
Simple and flat question. What is the difference between a 5w30 and 5w40 engine oil?
I have always known that 5w30 oils are made for fuel economy reasons and that replacing them with a 5w40 is always advantageous to protect the engine. I seem to have understood that this is not the case ..
I often hear that a 5w30 oil protects up to 30 degrees. I seem to have understood that this is not the case ...
thank everyone who would reply