Originally Posted by Snowy
It gives me a headache thinking about it.
For the love of God, use google or something and search for oil grades explained....read...learn...and let's not do this again.
Here is one such article. Search oil company sites, and check out the standards they refer to.
Just clicking on that link made my eyes bleed. I'm not looking to be an oil expert, hence coming here to get advice. Just the cliff notes please, thanks, LOL