I guess my question would be why bother?
And I have heard the same stories about synth. and high mileage
engines, and seals etc.... anecdotal hearsay...not admissable...
If it made it over 100K miles on dino oil, why change what is
apparently working fine?
Walt
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webb@daikin-america.com wrote:
> While we're on the subject, what about changing over to synthetic, esp if
> your engine has > 100K?
>
> A mechanic once told me that synthetic is slicker and has more detergents,
> as a result it can cause seals to start leaking and loosen gunk in a motor
> leading to clogged oil pump strainers in higher milage engines. He
> recommended flushing the engine before converting to remove the gunk but
> leaking seals are still a risk. I'm not sure my seals can leak more so
> maybe not much risk ;^).
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