Originally Posted By: Lex94
Originally Posted By: Gokhan
Originally Posted By: Shannow
Originally Posted By: Gokhan
I will probably start following my manual and use 10W-30 in the next OCI. Perhaps, I'll put in the new Pennzoil Platinum SN Plus 10W-30, which will become available next month.
An ILSAC 10W30...go for it...do the Harman Index thing to confirm.
Have a play with this concept...
https://www.bobistheoilguy.com/forums/ubbthreads.php/topics/4717883/Re:_Which_two_oils_would_you_m#Post4717883
I've calculated the A_Harman index for PP 10W-30:
Assuming HTHSV = 3.00 cP, A_Harman index = 0.929
Assuming HTHSV = 3.10 cP, A_Harman index = 0.960
Assuming HTHSV = 3.15 cP, A_Harman index = 0.975
So, chances are that the A_Harman index for PP 10W-30 is at least 0.960 or above. It's practically a SAE 30 monograde with a naturally high viscosity index, low CCS, and low MRV. It would be great for protecting the timing chain, valvetrain, piston rings, etc. if you believe the claims in the Nissan paper in the original post. NOACK is also assumed to be exceptional (reported by Shell to be 4.7% in the past).
How to calculate the A_Harman index
An inexpensive non-ILSAC alternative is Pennzoil High Mileage 10w30...Your engine will be turbine smooth with that big shot of Moly.
http://www.shell-livedocs.com/data/published/en-US/feb71e8a-e004-4c0f-a31d-a327f9a1115e.pdf
Mobil 1 High Mileage 10w30 ACEA A3/B3 is a great alternative as well.
https://www.mobil.com/English-US/Passenger-Vehicle-Lube/pds/NAXXMobil-1-High-Mileage-Oils
Thanks. All good oils. M1 HM 5W-30 A_Harman index = 0.926. I'm also considering Mobil Delvac 1300 Super 15W-40 CK-4/SN.