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Synthetic Oil?
On Tue, 02 Sep 2003 23:20:05 GMT, (Steven Shelikoff)
wrote:
On Tue, 02 Sep 2003 09:04:18 -0500, Messing In Boats
wrote:
I've been using Mobile 1 in my 5.7 Mercruiser since I bought it with 211
hours on it. I use the green top 10-30W variety which is supposed to be
for older motors. I believe part of the reason Merc doesn't want you to
use it is because they don't sell it. Their pitch is similar to other
fluids for their equipment.
I thought that might be the case also. But judging from the statement a
few posts up where they allow you to use a "good quality 20W-40 or
20W-50" that is not their brand, I'd say there's probably some other
reason they don't want you to use synthetic. After all, it's nothing
for a company like Mercury to have someone make a synthetic oil for
them, brand it and sell it for a good profit. You don't think Mercury
makes their Quicksilver themselves, do you?
If they did brand their own, don't be surprised if they recommend you
use only that brand of synthetic as opposed to allowing you to use any
good brand of dino oil like they currently do. Probably for the same
reason that I'm guessing they don't recommend any synthetic currently
.. they're all very different and that makes reproducable testing
difficult and expensive. They'll just test their hypothetical brand of
synthetic to make sure that the failure rate at X*sigma below the MTBF
(determined by how much it costs to repair the engine vs. how much it
costs to make it last a little longer) is still high enough that it
MTBF should be high enough, failure rate low enough.
Steve
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