It just came to me this morning that there is a place where we could all meet in peace. It seems obvious that we could all use 5W30 synthetic in any application, or alternatively use whatever you wish, but remain silent. Who is is with me? Who will end this “Forever War?” I could use prompt answers as I am going to Wal Mart later in the day.
Truce on Thick Versus Thin
- Thread starter TomYoung
- Start date
Too thick - 0W-8 for all................ 
Everyone needs a hill to stand ground or die on.
Everyone needs a hill to stand ground or die on.
We could but what would be the fun in that?
Unless if I could get some bulk discount for buying a drum I'm not sure what I'd gain. Have 3 grades at the moment on the bench, try to keep an OCI or two on the shelf in stock, as I'd hate to stock up only to lose the vehicle using that grade. I guess going your way would mean that drum could still be used but still seems like juggling risks. Like, what if I went EV or moved? low risk but big cost.
Unless if I could get some bulk discount for buying a drum I'm not sure what I'd gain. Have 3 grades at the moment on the bench, try to keep an OCI or two on the shelf in stock, as I'd hate to stock up only to lose the vehicle using that grade. I guess going your way would mean that drum could still be used but still seems like juggling risks. Like, what if I went EV or moved? low risk but big cost.
My car is specced to use 5w-30 but gun-to-my-head, if I had to choose between 5w-20 or 5w-40, I would go with the thicker.
Thin always loses.
Piston driven aircraft don't run 20wt oil because not falling out the sky is more important than fuel economy.
IIIG and later IIIH tests have always allowed worse results for 20wt, almost like they're planning for engines running 20wt to not last as long....
Long term tests show more 20 to 25% more ring wear with 20wt oil than 30wt oil.
Make that 0W-30 for those of us who experience winter extremes and I'm in.
In fact, I decided last year to go with 0W-30 as the one oil to rule them all, at least for the vehicles I service.
One is spec'ed for 5W-20; I believe the others are all 5W-30.
Which 0W-30? Based on wise counsel here on BITOG, I'm going with Mobil 1 ESP.
Reasonable.
I've often thought we hit the sweet spot when 5w-30 was the commonly recommended grade.
I demand that everyone use 5w40!! 
What´s fun is to instigate an argument between the thickies and thinnies over a brand of 0w20 with a kinnematic viscosity of 9.2 at 100 degrees and a brand of 5w30 that is 9.4. Then stand back and watch them shred each other.
I doubt it!
I will say No!
Not on this Forum!
Not me!
It will end when the side that is wrong stops arguing with the side that is right! I am not going to be the Who person!
I'm using 0w-40. It's the thickest and also the thinnest.
End the war? No fun in that. Thickie, just like my skull. THICKIES RULE!!! 
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Of course, I AM using a lot of 0W-30 ESP
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.Of course, I AM using a lot of 0W-30 ESP
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It is the Baked Alaska of motor-oil viscosities.
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