Jon, I'm an Amsoil Dealer, my name is Wayne and the reason your oil is a
5W-30 is because the oil is beginning to break down. I take oil samples from
all of my new customers to determine the condition of the engine. I ask them
what brand and weight oil they use and mark it on the slip. When the results
come back, the weight is NEVER the same when first poured in the engine.
Most often the oil is a single weight. This happens every time. How long has
the Mobil 1 been in your engine? Mobil 1 does not last very long, but a
little longer than dino oil. You still have to change it often if you want
good protection. This is why most people don't switch to this type of
synthetic, too expensive.
You might want to consider using Amsoil. It won't break down and lasts much
longer than any other synthetic on the market today.
Feel free to e-mail me if you have any questions at all.
(pimental@massed.net)
> Date: Thu, 20 May 1999 03:36:24 -0400
> From: Jon Steiger <stei0302@cs.fredonia.edu>
> Subject: Re: DML: Oil
>
> At 10:38 PM 5/18/99 , you wrote:
>>by definition, if the oil behaves as the numbers indicate, the HOT viscosity
>>of 5W30 (I assume that's what you mean) and 10W30 are the same... but 5W30
>>flows much better at COLD temperatures... especially below zero.... quicker
>>lubrication to the valve area..I've heard like almost 30 seconds difference
>>between the two different oils.
>
>
> What do the two numbers mean? I've had my oil analysed by Blackstone
> Labs twice now, and both times, they told me that my 10W30 oil had the
> viscosity of 5W30. What would cause the Mobil 1 10W30 to act like 5W30?
>
>
> -Jon-
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