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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Synthetic Oil
I have an observation to share, and wanna see if others can confirm.
You know that varnish that builds up inside an engine over time? Especially
under the valve covers? Well, initial impression is that not only does
synthetic oil not create this varnish, but it CLEANS it as well! My cars,
all with mucho miles with conventional oil and always having a healthy amount
of such varnish, now seem to have none. I pulled the valve cover off my
Honda Accord to replace the gasket to halt a leak, and the underside looked
like clean metal.
In fact, it may have caused the leak -- and this may be why synthetic oil
gets a reputation for leaking out of cars. Some of those potential leaks may
be plugged by the varnish. When the varnish goes away, the leaks flow.
I found a coupla loose pieces that looked like chunks of varnish that came
loose, but haven't particularly noticed piles of it around. Maybe the filter
is doing its job. Or maybe the synthetic oil dissolves it.
BTW, my current policy -- adopted only a few months ago -- is to use only
synthetic oil, change it on the specified intervals, and change the filter
TWICE that often. The specified interval may seem kinda long to some (6000
miles on the Jag, 7500 miles on the Hondas), but that's why I use synthetic;
another possibility I considered was using normal oil and changing twice as
often. This would have theoretical advantages, but I have become convinced
of the superiority of synthetics and was basically unwilling to pay that much
that often. Filters, on the other hand, are dirt cheap (especially for
non-Jags) and I am convinced they are plugged and bypassing LONG before the
recommended change interval.
-- Kirbert | If anything is to be accomplished,
| some rules must be broken.
| - Palm's Postulate
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