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Synthetic blend oil

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Old 02-11-2008, 04:20 PM
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Default Synthetic blend oil

Don't worry, this is not another which is the best oil thread. I did a search, but didn't find exactly what I wanted.

I just have a simple question. Is it true high mileage engines may have a greater chance of encountering problems with full synthetic oil? I'm currently running Castrol 10W30 Synthetic blend. The engine runs fine with it, so I don't know if I should stick with it or move on to full synthetic.
Old 02-11-2008, 09:58 PM
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It isn't guaranteed there'll be leaks, but it is more likely due to the smaller molecules in synthetic oil. If your motor has been well maintained, I wouldn't worry too much about it.
Old 02-11-2008, 10:28 PM
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My car has 100k on it, I run Mobil 1 10/40. No problems here.




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