Here is the deal. I changed the oil in my car in April 2007. I am using Royal Purple oil with a Wix filter. I have put 650 miles on the car since the oil change and actually replaced 2 quarts (don't ask how I lost the oil).
When should I oil change again? I was thinking of not worrying about it until Spring 2009.

 

April 2008.

 

That was the other thought. So you think that changing the oil annually is my best bet?

 

Very few miles, started and driven occasionally, Group 4 synthetic oil - annual will be fine.

 

Fair enough. That will be my plan from now on. I did go 2 years before this last one. Now that she is running better and not overheating, I'm hoping to put on a lot more miles this summer.

 

My 2 garage queens get annual oil changes. Sub 1000 miles for each.

 

If you're going to be driving it more, follow RP's oil change recommendations (don't know what they say off the top of my head).

 

When I say more, I mean 1500 to 2000 miles over the summer. Definately not the DD. Tried that, 245 tires with a 350 and snow is intersting.

 

Best bet would be to change it when you stop driving it - gets rid of any corrosives that may be in the oil before it sits.

Then changing it again before you start driving it again would be extra insurance.

Personally, I use AMSOIL heavy duty diesel 5W-30 (Series 3000) in my seldom-driven vehicles. Has a higher total base number to keep acids down. It is rated for spark ignition engines as well as diesel. In the '57, I change it before the start of the season each year.