The engine in my 07 F150 is spec'd 5W20. In 1997, its 1st year in production, it was spec'd 5W30. In 2000 Ford spec'd 5W20, and back spec'd 5W20. I have used whatever weight oil I wanted to and it is still running with over 150K miles.
I have been doing a lot of reading about 0W40 in engines such as mine. There are mixed opinions about it and how it can ruin my engine. Some are even stating that using a 0W40 in a 0W20 spec'd engine will ruin it as well. Some are positive responses. Such as, use it over any other oil. It will protect your engine, esp. at start up and operating temperature.
What gives? I have had PP EURO 0W40 in my engine for almost a month, maybe more, and it has NEVER run as quiet as it does now. Am I reading opinions from "ARMCHAIR QUARTERBACKS" or people that actually know what they're talking about?
I have been doing a lot of reading about 0W40 in engines such as mine. There are mixed opinions about it and how it can ruin my engine. Some are even stating that using a 0W40 in a 0W20 spec'd engine will ruin it as well. Some are positive responses. Such as, use it over any other oil. It will protect your engine, esp. at start up and operating temperature.
What gives? I have had PP EURO 0W40 in my engine for almost a month, maybe more, and it has NEVER run as quiet as it does now. Am I reading opinions from "ARMCHAIR QUARTERBACKS" or people that actually know what they're talking about?