2006 E320 CDI, 2009 ML320 Bluetec, 2009 GL320 Bluetec
You're Clueless....Every car manufacturer out there has its own oil grease ETC.Basically saying if you don't use our recommended oil the car won't run Which i find very funny.I have always used aftermarket heavier oils on my MBZ and never had seal blow by or material shavings from poor viscosity and lubrication.Dealer said i should use w0-40 oil in my engine have you seen what happens to it when engine reaches operational temperatures.It turns in to water how do u expect engine to be properly lubricated with an oil like that.Im not saying ticker the better but if you are not living in alaska where temperatures are -50c please stay away from water like oils
The 0w40 offers the same protection as a 15w40.
However a 15w40 CANNOT protect as well as a 0w40 especially in a cold climate.
Each number has its own meaning in respect to how the oil will flow and ultimately protect.
For most engines made by Mercedes a 5w40 offers the best all around protection. The 0w40 is an ideal oil for those that live in areas with a wide range of temperatures.
The 0w40 MB229.5 will continute to protect at temperatures as high as +400F where a conventional 15w40 will fail at around +265F.
A 15w40 will not flow at all in the sub-zero conditions where the 0w40 will continue down to -50. This translates into faster oil pressure and quicker protection to the motor.
When given a choice, a 0w40 wins everytime.
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