Hello Customer (name blocked for privacy):
Yes, of course you can. And if you live in an extremely cold climate, I recommend that you do run on full synthetic oil. Synthetic oil is superior to regular (mineral) motor oil in that it flows easily at sub-zero temperatures. Unlike mineral oil that becomes thick and with the texture of honey when subjected to sub-zero temperatures.
A lot of people don't know this, but 95% of the wear and tear on your engine occurs during a cold start-up. When your engine is cold, almost all of the oil drains down into the oil pan. When the engine is first started (especially on cold days), you have up to 20 seconds of metal-to-metal contact inside the engine (until the oil pressure builds up). This metal-to-metal contact is what causes wear in your engine. Synthetic oil bonds to metal surfaces inside your engine, preventing that metal-to-metal contact at start-up. Synthetic oil also allows your engine to work easier with less friction and keeps things cooler. Because an engine filled with synthetic oil runs much cooler than an engine filled with mineral oil, you can extend the length of time between oil changes, up to 7500 miles, vs. up to 5000 miles with mineral oil.
About the only drawback to using synthetic oil is the cost. Synthetic oil can cost up to 3 times as much as mineral oil. But if you buy a car to keep "until the wheels fall off", as I do, synthetic oil is a wise choice.
Don't be afraid to use synthetic oil. They have been proven to be a superior oil.
Check out these websites I found. They may help you in your decision whether or not to use synthetic oil:
Synthetic Versus Conventional Oil- Car Craft Magazine
Car Bibles : The Engine Oil Bible
Auto Industry’s Best-Kept Secret; Synthetic Oil
If you own (or plan to own) a car with a turbocharger, I recommend that you use a full synthetic motor oil. Turbocharged engines run much hotten than non-turbocharged engines, and mineral oil just will not stand up to all that heat. I own a 2003 Mazdaspeed Protege, with a turbo, and I wouldn't ever dream of filling the crankcase with mineral oil.
I hope this has answered your question. If you need further assistance, please reply. Otherwise, clicking ACCEPT is greatly appreciated. Thank you.
Billy
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