<VV> Old Oil

[Hugo Miller]

I have always shied away from synthetic oils in old engines. I have 
heard bad things about it, but I have no idea whether they are just 
rumours or based on science? Isn't it supposed to leak past the oil 
seals - or is that just a myth? And isn't it designed for closer bearing 
tolerances?

On 2020-08-06 20:04, roboman91324--- via VirtualVairs wrote:
> To everyone who responded to my inquiry,
> As always, I appreciate this community for its willingness to share
> their knowledge and opinions.
> In my more modern cars, I have always used full synthetic oils from
> their first oil change.  (Other than company cars.)  "Back when"
> Mobile 1 was the only choice generally available but there are a
> multitude of choices these days.  I will do some research.
> I will use up the old dino oil on my 1970 C20 and a couple of
> others.  Based on suggestions, I will shake the bottles vigorously
> before use and check to see if the oil is clear.
> Thanks again,
> Doc
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