Extra Extra Virgin!!!

 

Wrong thread, he's not a member so he cannot go there....

 

Mobil 1 has slightly below the recommended concentration of zinc, if memory serves. I ran the 15-50 for a while and switched to Amsoil Z Rod 20-50 and like the oil pressure and quiet engine. I live in a warm/hot climate and with the Mobil I had random ticking sounds that would come and go. The Z rod is formulated for flat tappet engines.

 

Per the link I posted above, M1 15W-50 has 1200/1300 ppm of Phosphorus and Zinc, which is the "old" standard our cars were more or less designed to run on.

The air cooled specific oil (like M1 V-Twin 20w-50) has 1600/1750.


Here is a fun monkey wrench on this debate. The most powerful 5-liter 928 engine in history doesn't even use synthetic oil and you've probably never heard of the brand:

http://products.lelubricants.com/ite...1238&forward=1

I'm currently in the process of switching all the fluids in my cars to their products.

 

I haven't brought it up because I know these threads can turn to religious arguments and I'm not really all that worried. BUT since I stumbled upon this one today, here's my question:

What is the argument for Rotella T6? I use it in my Cummins Ram, mostly due to "conventional wisdom" for the big diesels. I'm guessing it has the zinc that the 928 block prefers? Would be easy for me to throw another jug in the cart when the 928 is due for a change too.

 

And we get this where? Its a 3 hr long drive or $300 flight to Green Bay for me to get oil.

 

Hi, the higher levels of Zink is for the older style "Flat Tappet" Cams that we have, not the block.
Newer engines have/use "roller style tappets" that reduce the friction between the Cam and Tappet.

Dave

 

I did look at the pdf you shared. Thanks. I do see that it list the 1200-1300. Is this old standard still sufficient? Would it be a bad idea to add this treatment that provides more zddp?

 

Jeff, I think it said they ship from TX.

 

I switched my 928 to the RP 20w-50 HPS in 2013. Two DEs seems ok so far. My owners manual pretty much wants 15w-20w to 40-50 viscosity ranges for my climate here. I never had a problem with the M1 15W-50 in any of the 3 928s I've owned. I still use it in the 968 & will at least till I run out of my supply in the garage.

FWIW, I notice Wally World is carrying the gallon sized jugs again. After last year when a phone call to M1 I was told they were discontinuing it cause they didn't sell enough of it.

So what is the "new" zinc levels for our 928s? Was not aware the "anti" was upped!

 

Interesting... They are 10 minutes from my office. I need to go by there and see what they have available as a store front.

 

Better yet check out their dumpster....look for empty bottles of brand X oil to which they add their proprietary miracle juice.... sorry I know nothing about the product or "company" just sounds far too familiar. Would be interesting to know who refines "their" oil....

 

Adding fuel to the fire. Please don't shoot the messenger

http://www.bobistheoilguy.com/forums...Number=1049812

 

Hmmmmmmm knock yourself out! just use Wesson, or extra virgin for the best protection. I think I read it on the internet, so it must be true.

Otherwise, I think ill just stay with what works........A------------- nevermind!

 

S4Bill, the Mobil 1 site is incorrect. The following text is on their Oil selector page.

If you selected "Let me decide," once your vehicle is identified, we'll ask a few more questions about your driving environment, and then display our products of the appropriate viscosity for your vehicle.

If you selected "Help me decide," we'll also ask you to select the protection level that you're looking for in a motor oil. Then we'll display our products of the appropriate viscosity for your vehicle categorized by protection level.

The selector is not working, in that it is not asking you questions like where you're from, kind of driving etc.