Originally Posted By: mauric3
wow the pennzoil ultra has a tbn of 9.1? Thats pretty good!
so with 9.1 TBN.. that would be able to do 10k km OCI?
In a clean,well maintained engine 10000 miles isn't even breaking a sweat. It's their top tier oil. If it can't do 15000 miles why even bother with it.
Originally Posted By: mauric3
Wow run it to 20k miles? [censored]. that's pretty long.. 9.1 TBN would be able to do 20k easily?
Wow.. the old one has 12? [censored].. wonder why they reduced the TBN on the latest PU..
The tbn may be lower however the SN version retains its tbn for longer. It starts with less but it lasts longer.
I just did a complete oil change today with a 5L jug of SN 5w-20 ultra and a quart of devlac elite 222 0w-30.
I had liqui-moly 0w-40 with a quart of pp 0w-20 prior to this sump fill. Oil temps have risen 10f on the highway with the new oil,top end is slightly more noisy. I used a fram ultra this time so no filter changes for a while now.
PU is the cream of the crop. Shell's marketing department dropped the ball real bad marketing it.
I don't get understand where their heads are at. They've got platinum as their premium line which is able to do 10000 mile drains then they've got ultra which is the premium plus line which can do 15000 miles but they don't market it that way.
They should have it up beside M1 EP,Amsoil signature series and so on. Its a long drain oil but only us bitogers are aware of it.