Deeper market penetration and reach. You forgot Red Line HP 0W-16, which I have yet to see in the wild. I'm not sure they realize that most people using such motor oils that want to treat their vehicles a bit better will "splurge" on that Mobil 1 Extended Performance.
The difference between ILSAC 20 and 30 grades is nearly insignificant. There is a difference, but you can safely run 5W-30 in anything that calls for 0W-20.
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I started this thread with the intention to share the information that I have. In no way do I endorse the bashing of any product. I like constructive criticism, and as a Red Line customer I voiced that criticism to Red Line every chance that I got.
I believe they're making excellent products.
I also believe that it's a mistake to split up the High Performance product line into different product types. It creates confusion, and might lead to some broken engines, as
@RDY4WAR explained. Red Line should have created a new High Performance lineup for these new blends. Simply calling it Daily High Performance or something along those lines, while explaining in a few sentences what it is would have been much better and avoided confusion and probably some angry customers.
Lack of transparency is another big issue with Red Line. They have to stop acting so cryptic because there is enough knowledge out there so we know that it's not the Wizard of Oz who makes the lubricants with ingredients from a parallel universe.
The last one: Red Line consistently fails to update their website with up-to-date and accurate information about their products. If they don't have a Webmaster on staff that handles their website, they need to hire one. And if they do, they either need to get that person to do their job or hire someone else. There are specifications on that website that haven't been updated in 6~7 years. Common! It can't be that hard. I know that others are failing or botching this task as well, Mobil and Shell included. Castrol, at the very least, is doing a somewhat decent job via their MSDS-PDS portal. But Red Line is an enthusiast brand, and enthusiasts have a keen eye for the little details, including their website.