that article was in latest issue of Consumer Reports.
"ross via CarKB.com" <forum@CarKB.com> wrote in message
Big Shoe wrote:
>I saw an article yesterday that talked about a sludge problem with
>certain engines from a number of manufacturers, including VW,
>Chrysler, Toyota and Saab. The article said that these engines tend
>to form sludge no matter the driving conditions or maintenance. It
>appears that they may have hot spots where oil is held long enough to
>break down and plug passages, requiring replacement of the engine.
>This is the strongest argument I have seen yet for using synthetic
>oil. I have never used it in my vehicles, but am now seriously
>thinking about it. Those of you using synthetic in your Explorers -
>what viscosity do you use and how often do you change?
Where was the article? I'd like to read it.
Been using Mobil1 since it came out ( over 10 years now???). Many engines,
including a BMW 735. I change at 8,000 no problems of any kind. I use 10-
30. Just went to the new 15,000 or one year stuff. I guess AMSoil has a 25,
000 or one year synthetic.
The true synthetics are Mobil1, AMSoil, Redline. The other synthetics are
apparently use grade 3 oil base stocks with a "hydro cracking process" - not
true grade 4 base stock synthetics.
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