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Old 11-30-2009, 04:24 PM   #5 (permalink)
Wonderboy
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Join Date: Jun 2008
Location: Chicago
Posts: 674

The Fruit Bat - '01 Honda Insight
Last 3: 54.26 mpg (US)

Current - '21 Subaru Impreza Wagon
90 day: 34.36 mpg (US)
Thanks: 40
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No, I know it will notice, I just didn't want to start throwing synth in there right away because the oil was nasty and black when I got the car. I went a few changes more frequently than usual with the prescribed weight conventional oil (5w30), and after a little over a year of doing that, the oil seems to be coming out a bit cleaner after oil changes. It still doesn't look as nice as I'd like, but I know I've got some blowby too, so the oil is a little dark and smells a bit of fuel. After one more change of conventional, I plan to go synthetic 5W a change or two, see what it looks like, then full synth. I don't feel like wasting the money on synthetic if my engine is just going to gunk it up really quickly. Has anyone here had any experiences to share with switching to synth from conventional? I know all the old claims are pretty much moot now, but I'm less worried about "loosening old gunk" than wasting money on an engine that has a little bit of blowby and burns about a quart per 1500 miles. Anything to be aware of when using 0W20, be it synthetic or not?
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