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Any thoughts on which is the superior product? The M1 Formula M 5W-40 is what Benz dealers stock for gasoline engine OC's. http://pds.mobil.com/USA-English/Lubes/PDS/GLXXENPVLMOMobil1_Formula_M_5W-40.aspx

I just purchased a 2014 E550 4MATIC and was told by the service manager at the Benz dealer that I should NOT change my oil before 5-6k because the factory fill includes some form of break-in oil and doing so prematurely will eventually result in excess consumption. Personally, I don't think he...

They have finally gotten some new stock, but look at that price tag! http://www.amazon.com/Pennzoil-550020166...oil+ultra+5w-30

I would be interested in hearing opinions about the polarity of POE molecules impacting start-up wear via "clinging" to metal parts and /or each other, thus maintaining a film of lubricant and minimizing cold start-up wear vs grpIII+ and PAO.

Nearly everyone here on BITOG seems to agree that the SM is superior to the SN. Clearly the MRV and VI numbers are better in the old formulation. The old SJ had a VI of 196 (http://www.ulei-mobil.ro/pdf/MobilAutoDataSheet/Mobil%201%200W-40%20pds.pdf). The change to SN seems to have included...

Opinions on GTL base stocks being equivalent or even superior to PAO/POE?

Does anyone have a link to a product data sheet for Sustina oils?

Does anyone know how to make comparisons of cold temperature performance of 0W oils when manufacturers publish MRV and others publish pour point? For example, Mobil publishes both for their 0W-30, but only MRV for 0W-40.

Thoughts on which is the superior 5W-30? I am switching from Redline (I believe it was dumbed down a bit recently and is no longer worth the price premium) after using it for the last 135,000 miles and am trying to choose between the two for the remaining life of my 2005 Sequoia. I considered PU...

Anyone know why M1 1 EP is significantly more expensive than M1 0W-40 at Wally World? Currently $22.95 (all M1 products except the EP) versus $26.95.

The Japanese all seem to be going to 5W-20/0W-20 for most of their newer products. Have the Germans followed suit? If not, why not?

Code: OIL M1 10W30HM M1 10W30HM OIL FILTER AMSOIL EaO MOBIL 1 AIR FILTER AMSOIL EaA AMSOIL EaA MILES IN USE 6351 4200 MILES 147,151 140,800 SAMPLE TAKEN 11/09/08 07/09/08 MAKE UP OIL 0.5 QT 0.0 QT...

A terrific resource for those with the educational background to follow the articles is available here: http://www3.interscience.wiley.com/journal/112094290/home/ProductInformation.html Subscriptions are a bit expensive, but it is often available through your local library.

I emailed Amsoil's technical department to get a definitive answer as to wether or not SSO, ASM, ASL, or ATM contained any Group III. I received the following answer from Steve Pelach: "The Technical Department is not privy to what base-stocks are used in specific products. However, we can tell...

Does anyone know from whom Redline sources their base oils and additive packages? I'm thinking Hatco for the POE and Exxon-Mobil for their PAO but I'm not sure.

Embedded in a recent thread about Group IV versus Group V oils, Pablo alluded to the fact that Redline uses some PAO in their oils. This was met with some skepticism by glennc. In order to set the record straight, I emailed Redline and received the following response: Thank you for contacting...

Amsoil and Mobil publish ASTM D4683, Redline publishes ASTM D4741. Do the differences in testing methods make comparisons between these products reliable as it pertains to HTHS?

I find it interesting that among all of the Mobil 1 products for which a pour point is listed on a product data sheet, the HM 10W-30 has the lowest of the bunch at -54 degrees Celsius. This despite the relatively high HTHS of 3.66. This pour point is lower than their M1 5W-20 and even lower than...

I am considering trying an Amsoil bypass oil filtration system merely out of curiosity and the fun of tinkering. However, I am concerned about the 10% reduction in oil flow to the engine. Isn't this reduced oil flow/pressure in and of itself a potential cause of increased wear? Would replacing...

In perusing various threads on this site, I have read several references to the EaO that allude to its ability to "clean" engine oil to a level that exceeds that of virgin oil. I find this claim rather dubious. Can one or more of the experts on this site explain precisely how this occurs? Also...