Synthetic oil is the best, but I don't know if it will change this problem. Two things. First, make sure you are using an oil weight that is recommended by the manufacturer for the temperature range you are in. Second, make sure you are using a quality oil filter with an anti flow back valve. Some of the cheaper oil filters allow oil to drain from them as the engine is off. As a result, pressure needs to build again when it's restarted. Thus, you can get a ticking.
Let me know if you have other questions.
Joe
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Friday, December 4th, 2009 AT 10:38 AM