Your Favorite Oils...

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My standard "default" oil is now Shell Rotella Syn in 5w-40.

I was using Mobil 1 T&SUV 5w-40 when it was available. I have enough for about 3 Duramax oil changes on hand.

When I run 15w-40, it is usually Mobil Delvac 1300

In addition to the Duramax, I have an old Infiniti Q45 and really old Mercedes turbodiesel. Also a 74 BMW air cooled twin motorcycle.
 
Whatever is on sale... lately Chevron, Havoline and Rotella T (for the motorcycle).
 
Redline 5W-20 / 5W-30/ 5W-40 / 10W-40

GC 0W-30

M1 0W-20 / 5W-20 / 5W-30 ep /10W-30 ep / 0W-40

Pennzoil Platinum 5W-20

Amsoil 0W-30 / 5W-40 european

Delo 400 15W-40

Delvac 1 5W-40

Motorcraft 5W-20/ 5W-30

Havoline 5W-30 / 10W-30

Quaker State Truck and SUV 10W-40 syn blend
 
Whatever on sale for the lowest price or FAR (Free After Rebate). All oils are so good today compares with 20 years ago, you can not get "Bad Oil" now. IMO
 
The question is;

quote:

What are your three top conventional oils?

Some of the answers are sure expensive dino oils then...
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Pennzoil
Castrol
Chevron

Would be my picks.

But agree that with the SL/SM, most oils are excellent protection and keep the engines as clean as anything else out there.
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Take care, bill
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