M1 0w40 or Red Line 5w40?

[JAG]

Originally Posted By: Volvohead

Originally Posted By: Gilitar
I want an oil that I don't have to worry about the turbo cooking.


Then you should lean towards RL or another POE-heavy base oil. These will have the best thermal performance. Another oil is Motul 300v, but that is more of a track oil than RL in the weights you are looking at and is ugly expensive.

Don't ignore antioxidant and detergent/dispersant performance which are IMO two of the most important factors, besides base oil mix, that affect resistance to coking. M1 0W-40 has always performed very well in my high temperature deposit tests and it did the same in my GTI 1.8T.

 

[Volvohead]

Originally Posted By: JAG
M1 0W-40 has always performed very well in my high temperature deposit tests . . .


What tests? Were you the guy cooking oils on a hot plate a few months back?

 

[Gilitar]

Hey JAG,

You have a nice selection of cars! Were you the one that put different oils on the grill in aluminum platters? Do you have a link to your results?

Thanks in advance.

 

[djlinux64]

Redline wins this hands down. I am not sure why people even argue over this besides if it is worth it for cost reasons?

M1 is not what it used to be pre-1997 with its PAO base stock. M1 is now a blended Group III hydrocracked oil with a touch of PAO and esters to boost their numbers.

Redline is purely PAO/Esters and that means it has higher flash point, lower pour point, higher thermal stability, higher shearing resistance.

 

[JAG]

Originally Posted By: Gilitar
Hey JAG,

You have a nice selection of cars! Were you the one that put different oils on the grill in aluminum platters? Do you have a link to your results?


Thanks, I like my cars!

I've been doing a wide variety of high temperature testing of oils since 2000 or 2001. I did not post most results of most of the testing. Because of my high post count, it is hard to find most of the links to the results that I did post. What specifically are you most interested in finding out?

I did dig up some links:
http://www.bobistheoilguy.com/forums/ubb...true#Post718484
Note that later tests of Mobil 1 0W-40 vs GC proved that GC was more volatile.

http://www.bobistheoilguy.com/forums/ubb...true#Post879346

http://www.bobistheoilguy.com/forums/ubb...true#Post956352

Find my 1st post in this thread: http://www.bobistheoilguy.com/forums/ubb...true#Post785008

http://www.bobistheoilguy.com/forums/ubb...true#Post842343

I need to get back to work now. If you tell me what you are most interested in finding out, maybe I can find some testing more related to it.

 

[Brettasaurus]

I had a 380 whp NSRT-4 with A/W injection running 23 lbs of boost on a modified stock turbo and I always ran M1 0w40. I think you would be more than fine wth M1 0w40 but M1 TDT 5W/40 would be a great choice with a HT/HS of 3.9 I believe. One point with regard to Redline is the very high levels of moly might benefit an engine still being broken in. Although I saw an analysis of XW/40 Redline recently that had very little moly. I hope they did not change their formula.