Posted: Nov 06 2005 at 10:42pm | IP Logged
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I have been using synthetic oil for several years now and I have been really satisfied with it.I change mine every 5000 miles and even with this many miles it's still brown when I drain it compared to black like conventional.
As far as mixing the oil, you can mix it but I would do it only as a last resort ;ie. needing to top off the oil and synthetic is not available. Convetional oil is a petrolium based oil meaning it starts it's life as crude oil that is full of acids and other contaminants. While most of these unwanted particals are removed in the refining process, some still remain and this causes conventional oil to break down quiker than synthetic oil. So if you add conventional oil into synthetic your adding all this stuff back into your engine that you got rid of by going to synthetic.
Bottom line, if you plan on changing oil every 3000 miles a good convetional oil will do just fine but if you want an extended oil change synthetic is the way to go.
__________________ 2004 white Titan SE KC 2wd/off road pakage/popular pakage/Utili track
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