Originally Posted By: gaspo
RP thoughts.. sound like 'my bigger than yours'..
How do you compare to Amsoil?
A study by North Carolina State university showed that
Royal Purple improved fuel economy and reduced emissions when compared to Amsoil. Numerous independent users have also reported performance improvements when upgrading to Royal Purple.
It’s important to note that any lubricant manufacturer can point to specific lab tests in which their products excel as evidence of product quality. Royal Purple products excel where it matters, in real world applications.
Wow seek cover...........
It's all about marketing, and I'm sure any lab that is hired will give the results a company is looking for. Amsoil uses 4 balls, to show their oils ability, Castrol and Valvoline claimed better wear protection than M1. All from tests they paid for or conducted themselves. IMO unless I personally hire a lab that has no affiliation with anyone and I send off the products myself the lab reports are meaningless, advertising, hype. RP and Amsoil included, [I don't want anyone to think I'm picking on their favorite oil]. Run a test long enough, and pay for the testing, and you'll get the results you want to see. Oil is blended with profits in mind, profits come first, period. Every oil under the sun can be made better. Try them and do your own research and testing IGNORE hype from salesmen and advertising literature. Do your own homework and read make a decision based on that. JMO
PS NC Carolina State University might actually have a touch of credibility here, honestly. Who paid them? LOL