My opinion is that 75% of the population change their oil to much. 3 months or 3000 miles is normally for the severe duty vehicles. Look in your owner's manual for this definition for your manufacturer. Most double that for normal driving conditions. That being said, the only true way to know when your oil needs changed is to have it tested. But the testing costs more then the oil change. I recently switched to Castrol Syntech with a FRAM X2 Extended Guard Oil Filter, and plan on changing oil at 6000 miles. Some people don't care for fram oil filters, but I have never had an issue, but then I never buy the cheapest filter on the shelf either. My engine does run smoother and quieter. Some, or maybe all new GM vehicles have an oil change sensor. It actually keeps track of the condition of your oil and lets you know when to change it. GM has reported some people getting 10000 miles on their car before it is needing changed. People installing a by-pass oil filter, I think it is called, can get even more mileage out of an oil change. Do a Google search for extended oil change, and you will get lots of good info. Michael
_____ From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of John Schwery Sent: Tuesday, October 16, 2007 07:38 To: [email protected] Subject: [BlindHandyMan] synthetic oil, interval between changes? Can one change oil less often with synthetic oil as opposed to regular oil? If so, how long is the interval between changes? John -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.488 / Virus Database: 269.14.11/1071 - Release Date: 10/15/2007 6:48 AM [Non-text portions of this message have been removed]
