Brian, synthetic oil is actually cheaper when you consider the additional miles you get between oil changes. Consider this, an oil change using non-synthetic occurs at 3,000 miles and costs $30. Synthetic oil change occurs at 6,000 miles and costs $45. Therefore you're saving $15 over the course of 6,000 miles. My mechanic has been driving 7,500 miles between oil changes and still has the same car, same engine, he first used Mobil 1 in.
Caution, it's not recommended to begin using synthetic oil in cars with significant miles on them. I agree with JQ, check with a qualified mechanic before changing to synthetic.
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