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Ask Mobil Archive -
Viscosity
DateQuestionAnswer
05/07/2012
Applications Precluded by Higher Viscosity
Hello, as a High Performance shop owner and engine builder, can you give me details on the application(s) where anything higher than your 0 (Zero) weight motor oil would be less desirable over a highe...
It is important that oil provide an oil film thick enough to keep microscopic metallurgical imperfection in two moving parts separated to prevent welding wear. As engine manufacturers continue to prod...
04/14/2012
Is There an Oil Viscosity Lower than 0W?
Kind of a weird question but is it possible to have an oil with a viscosity lower that 0W?
Yes, but currently the SAE J300 viscosity specification does not define an oil below 0W. The limiting factor for such an oil would be the availability of base oil to accomplish this viscosity. Such an...
01/15/2012
Would Thicker Oil Stop Lifter Noise?
Can I use Mobil 1 High Mileage 10W-40 synthetic oil in my ‘05 Mercedes-Benz ML 350? It has 78,000 miles and the manual recommends Mobil 1 0W-40, which is what I've been using for the last six years. I...
In your area, there is no concern with moving to a 10W-40 viscosity grade oil.  Mobil 1 0W-40 synthetic oil is approved against MB 229.5 and MB 229.5 which is likely specified by your owner’s manual. ...
11/06/2010
Why Switch Motor Oil Viscosity in Different Seasons
My '99 Grand Prix has the 3800 engine which calls for two different viscosity engine oils. 5W-30 when temperatures are below 32° and 10W-30 when temperatures are constantly above 32°. My question to y...
The key difference in these two viscosity grades of Mobil 1 does not necessarily lie in the Pour Point measurement, but with the results of an industry low-temperature viscosity test called the Mini-R...
10/21/2010
What is SAE?
What does SAE stand for?
SAE stands for the Society of Automotive Engineers. It classifies motor oils according to certain viscosities and very general temperature ranges at which they can be used. The acronym appears on the ...
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