Originally Posted by avi1777
btw other subject,lspi is only in turbo charged cars not in a n.a right?
I'm leaning in the direction that that lspi can occur in non-turbo DI engines in specific varieties and age.
BTW.... the new Valvoline Advanced in 5w30 is impressive. A most recent VOA exhibited a TBN of around 10. It's what's going in my 2019 Santa Fe 2.4 DI after the factory oil. I've stockpiled three brands (Castrol / Valvoline / Pennzoil) and Valvoline appears to deserve top-dog (1st Honor), based on a few VOAs I've read.
Because the latest & greatest oils (SN PLus D1/G2) are so new on store shelves, it's hard to base top honors on UOAs currently. Maybe in another six months or-so, we will have a better handle on what we like most.
But with every similar-built oil in 5w30, what I like and others here like, may be different.