Interesting outside temperature window for - 5w30 vs 10w30


Veteran Member
Lifetime Gold Member
Feb 12, 2011
atlanta, ga
interesting results for sure????
5w30 oil is designed to operate at ambient temperatures as low as -30 degrees Celsius (-22 degrees Fahrenheit) – making it a great choice if you live in cold climates such as the Northeastern United States or Canada.

10w30, however, has a smaller temperature window.

It will perform best at temperatures above -18 degrees Celsius (0 degrees Fahrenheit) and below 30 degrees Celsius (86 degrees Fahrenheit).


NOTE: the 5x-30 in SYNTHETIC....the 10w-30 in dinosaur oil!!

better to NOTE: that the synthetics do not out perform LOWER (same as crude) but DO EXTEND in higher heat!

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