quote:Originally posted by RobertC:
My first glance at the first post raised several questions.
5W-50? too viscous for new car warranties.
201 VI. Really?
Phosphorous may be high enough to kill a cat. We have emissions testing.
Not near enough info there to make an intelligent decision.
SAe 5W-50
Iso 100
A broad range and a narrow spec. hmmmm.
Nope, not buying it.
Why would the phosphorous kill the Cat. if my engine is using less then 1 qt in 20,000 miles,which is my actual case on several cars. There has been actual emission tests done with synlube to back this. I have never had an emission issue with synlube.
The EPA,FTC,and so forth would be all over the company if that were the case. Yet no issues there as well.