I know this has been discussed a lot, but now that PU is published with a higher Noack than PP (in 5w30), and all other published numbers look nearly identical, is there any obvious reason to go with PU other than the advertised claims of better cleaning?
((I understand both are great oils and will far surpass my requirements...am just trying to learn what I might be missing that others are seeing.))
((I understand both are great oils and will far surpass my requirements...am just trying to learn what I might be missing that others are seeing.))